a)\(\left(a+b\right)\left(a+b\right)\)

\(=a\left(a+b\right)+b\left(a+b\right)\)

\(=a^2+ab+ab+b^2\)

\(=a^2+2ab+b^2\)

b)\(\left(a-b\right)\left(a-b\right)\)

\(=a\left(a-b\right)-b\left(a-b\right)\)

\(=a^2-ab-ab+b^2\)

\(=a^2-2ab+b^2\)

1. is reading

2. isn't listening

3. is coming

1. is reading

2. isn't listening

3. is coming

1. is reading

2. isn't listening

3. is coming

Câu 1. Chia động từ trong ngoặc ở thì hiện tại đơn và hiện tại tiếp diễn.

1. Trung is having a big breakfast this morning. He eats a leaf of bread and 2 eggs.

2.  At the moment, Toan is sitting in Dr Thanh's sugery. She is checking has teeth  .    

3. How often does your uncle visit the museum ? He goes there twice a year.

4. Lan's father is an architet but he isn't working at the moment.

5. Minh needs a phone card because he wants to phone his parents.

6. Tuan goes to the amusement center twice a week. He likes playing game very much at the moment.

7. Mr Khanh usually drinks tea but today he is drinking coffee.

8. It often takes me 20 minutes to walk to school.

Chia động từ trong ngoặc ở thì hiện tại đơn và hiện tại tiếp diễn.

1. Trung ( have ) has a big breakfast this morning. He ( eat ) eats a leaf of bread and 2 eggs.

2.  At the moment, Toan ( sit ) is sitting in Dr Thanh's sugery. She ( check ) is checking has teeth  .    

3. How often does your uncle ( visit ) visit the museum ? He ( go ) goes there twice a year.

4. Lan's father is an architet but he ( not work ) isn't working at the moment.

5. Minh ( need ) needs a phone card because he ( want )wants to phone his parents.

6. Tuan ( go) goes to the amusement center twice a week. He ( like ) likes playing game very much at the moment.

7. Mr Khanh usually ( drink ) drinks tea but today he ( drink )is drinking coffee.

8. It often ( take ) takes me 20 minutes to walk to school.

Chia động từ trong ngoặc ở thì hiện tại đơn và hiện tại tiếp diễn.

1. Trung ( have ) .......had.... a big breakfast this morning. He ( eat ) ........ate...... a leaf of bread and 2 eggs.

(Mình nghĩ câu này nên dùng thì QKĐ chứ nhỉ. Vì có this morning - sáng nay)

2.  At the moment, Toan ( sit ) ........is sitting....... in Dr Thanh's sugery. She ( check ) .....is checking....... has teeth  .    

3. How often .....does...... your uncle ( visit ) ........visit.......... the museum ? He ( go ) .........goes....... there twice a year.

4. Lan's father is an architet but he ( not work ) ......isn't working....... at the moment.

5. Minh ( need ) .......needs...... a phone card because he ( want ) ......wants........ to phone his parents.

6. Tuan ( go) ......goes...... to the amusement center twice a week. He ( like ) .......likes..... playing game very much at the moment.

7. Mr Khanh usually ( drink ) ......drinks...... tea but today he ( drink ) is drinking coffee.

8. It often ( take ) .......takes...... me 20 minutes to walk to school.

1.is reading

2.travel

3.student ko có ''s''=>do,nếu bạn viết thiếu thì là does

4.find

5.is watching

6.are reading

7.won't come

8.is playing

9.goes

10.are you going

11.studies

12.fix

13.are doing

14.will be

15.drawing

hk tốt

1.is reading               7.won't come            13.is doing

2.travel                     8.is playing                14.will be

3.go                          9.goes                       15.drawing

4.find                        10.is......going            

5.watches                 11.studies

6.read                       12.fixes

GOOD LUCK !

1.My father (read)..is reading....a newpaper now

2.my mother will (travel)...travel....to Nha Trang next week

3.Student often (go)..goes....to the school cafeteria at lunchtime

  ( Nếu "student" có "s" thì go giữ nguyên )

4. You can (find)...find...math book on the rack in the middle

  ( Sau "can" động từ giữ nguyên )

5.My brother (watch)...is watching .........T.V at the moment

6.Lan and Hoa (read).....are reading...... books in the library at the moment

7. We (not/come)...won't  come.........here tommorow

8.Listen! The girl (play)..is playing......Piano

( "Listen!"  trong câu trên là dấu hiệu của thì hiện tại tiếp diễn)

9.Nam (go)....goes.......to the Artist Club every day

10.What (be)..are......you (go)...going......now?

11.She (study)...studies.....map in Georaphy lesson

12. Ba can (fix)...fix......the washing machine

13.They (do)...are doing.....some experiment at the moment

14. You (be)...will be... a famous singer one day

15.He enjoys (draw)...drawing.... picture

    !!!

1. Trung ( have ) has a big breakfast this morning. He ( eat ) eats a leaf of bread and 2 eggs.

2.  At the moment, Toan ( sit ) is sitting in Dr Thanh's sugery. She ( check ) .is checking has teeth  .    

3. How often does your uncle ( visit ) visit the museum ? He ( go ) goes. there twice a year.

4. Lan's father is an architet but he ( not work )isn't working at the moment.

5. Minh ( need ) needs a phone card because he ( want ) wants to phone his parents.

6. Tuan ( go) goes to the amusement center twice a week. He ( like ) likes playing game very much at the moment.

7. Mr Khanh usually ( drink )drinks tea but today he ( drink ) drinkscoffee.

8. It often ( take ) takes me 20 minutes to walk to school.

9. Students in the USA ( not wear ) don't wear uniform .

10. We ( rehearse ) .are rehearsing a play at present.

1. Trung ( have ) has a big breakfast this morning. He ( eat ) eats a leaf of bread and 2 eggs.

2.  At the moment, Toan ( sit ) is sitting in Dr Thanh's sugery. She ( check ) .is checking has teeth  .    

3. How often does your uncle ( visit ) visit the museum ? He ( go ) goes. there twice a year.

4. Lan's father is an architet but he ( not work )isn't working at the moment.

5. Minh ( need ) needs a phone card because he ( want ) wants to phone his parents.

6. Tuan ( go) goes to the amusement center twice a week. He ( like ) likes playing game very much at the moment.

7. Mr Khanh usually ( drink )drinks tea but today he ( drink ) drinkscoffee.

8. It often ( take ) takes me 20 minutes to walk to school.

9. Students in the USA ( not wear ) don't wear uniform .

10. We ( rehearse ) .are rehearsing a play at present.

1. Trung ( have ) .......has.... a big breakfast this morning. He ( eat ) ......eats........ a leaf of bread and 2 eggs.

2.  At the moment, Toan ( sit ) ......is sitting......... in Dr Thanh's sugery. She ( check ) .....is checking....... has teeth  .    

3. How often .....does...... your uncle ( visit ) ........visit.......... the museum ? He ( go ) .........goes....... there twice a year.

4. Lan's father is an architet but he ( not work ) ....isn't working......... at the moment.

5. Minh ( need ) .....needs........ a phone card because he ( want ) .......wants....... to phone his parents.

6. Tuan ( go) ...goes......... to the amusement center twice a week. He ( like ) ......likes...... playing game very much at the moment.

7. Mr Khanh usually ( drink ) .....drinks....... tea but today he ( drink ) is drinking coffee.

8. It often ( take ) ......takes....... me 20 minutes to walk to school.

9. Students in the USA ( not wear ) ...don't wear........ uniform .

10. We ( rehearse ) .........are rehearsing........... a play at present.

Câu 1. Chia động từ trong ngoặc ở thì hiện tại đơn và hiện tại tiếp diễn.

1. Trung will have a big breakfast this morning. He eats a leaf of bread and 2 eggs.

2.  At the moment, Toan is sitting in Dr Thanh's sugery. She is checking has teeth  .    

3. How often does your uncle visit the museum ? He goes there twice a year.

4. Lan's father is an architet but he isn't working at the moment.

5. Minh needs a phone card because he wants to phone his parents.

6. Tuan goes to the amusement center twice a week. He likes playing game very much at the moment.

7. Mr Khanh usually drinks tea but today he is drinking coffee.

8. It often takes me 20 minutes to walk to school.

9. Students in the USA don't wear uniform .

10. We are rehearsing a play at present.

1. Trung ( have ) will have........... a big breakfast this morning. He ( eat ) ..eats............ a leaf of bread and 2 eggs.

2.  At the moment, Toan ( sit )is sitting ............... in Dr Thanh's sugery. She ( check ) .....is checking....... has teeth  .    

3. How often ..does......... your uncle ( visit ) .visit ................. the museum ? He ( go ) .....goes........... there twice a year.

4. Lan's father is an architet but he ( not work )isn't working ............. at the moment.

5. Minh ( need ) .needs ............ a phone card because he ( want ) wants.............. to phone his parents.

6. Tuan ( go) ...goes......... to the amusement center twice a week. He ( like ) ...likes........ playing game very much at the moment.

7. Mr Khanh usually ( drink ) .drinks........... tea but today he is drinking ( drink ) coffee.

8. It often ( take )takes ............. me 20 minutes to walk to school.

9. Students in the USA ( not wear ) don't wear  ........... uniform .

10. We ( rehearse ) are rehearsing.................... a play at present.

1. am reading

2. watch

3. talk

4. are playing

5. doesn't go shopping

nhớ tick mik nhé :)

1.Chia động từ trong ngoặc

1. I ( read)....am reading.... an interesting novel at the moment

2. Do you usually (watch)....watch.....TV in the evening?

3.They always (talk)....talk....to each other in the weekend

4. They (play)...are playing....soccer at the moment.

5.She often ( not go ).....doesn't go....(shop)....shopping... on weekend.

Chúc bạn học tốt!

1.am reading

2.Do..... watch

3.talk

4.are playing

5.doesn't go/ shopping

We ( meet ) meet each other twice a month

He ( listen ) is listening to the telephone at the moment

They always ( not go ) not go to the school by train

He ( drink ) drinking beer at the bar at the moment

They usually ( sing ) sing in the early morning

Give the corect verb forms : Present simple or present continuous tenses :

We ( meet ) ......MEET.... each other twice a month .

He ( listen ) .....IS LISTENING..... to the telephone at the moment .

They DON'T always ( not go ) ..GO........ to the school by train .

He ( drink ) .....IS DRINKING..... beer at the bar at the moment .

They usually ( sing ) ....SING...... in the early morning .

We meet each other twice a month.

He is listen to the telephone at the moment.

They always don't go to the school by train.

He is drink beer at the bar at the moment.

They usually sing in the early morning.

Mk chắc chắn đúng

1. rains

2. isn't being

3. won't go

1. It is rains very much in the summer.

2. Lan isn't in her room at the moment.

3. She isn't goes to the movies theater tomorrow evening.

1. It (rain) rains .very much in the summer.

2. Lan (not be) isn't being  in her room at the moment.

3. She (not go) won't go  to the movie theater tomorow evening.