Supply the correct form of verb

1. Yesterday, my sister (be) .was...... at home

2. They (not be) ...won't be ......... at school next Sunday

3.Was (He be)............ at the party last night?

Yes,he (be)...was.......

4. Nam often (do) ...does........ his homework after school

5. What time ..did........ you (go) ...go.......... to bed last night

6. We (be) ...will be.......... in London next week

7. It (be) ....was......... sunny yesterday

8. I and Nam (be) .....were......... at the cinema yesterday

9.Last summer, I (visit) ..visited......... Da Lat with my family

10. Last night, I (do)..did........ my homework. Then I (go) went to bed

Alan walker

Đặt a+b = x , c+d = y

Ta có : \(\left(x-y\right)^2\ge0\) với mọi x , y

\(\Leftrightarrow\) \(x^2-2xy+y^2\ge0\)

\(\Leftrightarrow\) \(x^2+2xy+y^2\ge4xy\)

\(\Leftrightarrow\) \(\left(x+y\right)^2\ge4xy\)

\(\Leftrightarrow\) \(\left(\dfrac{x+y}{2}\right)^2\ge xy\)

\(\Leftrightarrow\) \(\dfrac{\left(x+y\right)^4}{16}\ge x^2y^2\)

\(\Leftrightarrow\) \(\dfrac{\left(a+b+c+d\right)^4}{16}\ge\left(a+b\right)^2\left(c+d\right)^2\ge4ab.4cd\) ( vi (a+b)^2 \(\ge\) 4ab )

\(\Leftrightarrow\) \(\dfrac{\left(a+b+c+d\right)^4}{16}\ge16abcd\)

\(\Leftrightarrow\) \(\dfrac{\left(a+b+c+d\right)^4}{256}\ge abcd\)

\(\Leftrightarrow\) \(\left(\dfrac{a+b+c+d}{4}\right)^4\ge abcd\)

Vay \(\left(\dfrac{a+b+c+d}{4}\right)^4\ge abcd\) .

Chọn đáp án đúng nhất:

1. Hung watches television _______ the time.

A. more B. most C. most of D. more of

2. People are living ______ so there are more elderly people.

A. short B. shortly C. longest D. longer

3. American hospital voluteers are called 'candy stripers' because they wear striped pink and white.

A. dress B. skirt C. clothes D. uniform

4. Nowadays more people are concerned ______ the environment.

A. about B. of C. at D. in

5. Some volunteers work ________ neighborhood clean-up service.

A. in B. on C. at D. of

1.you/how/were/old.

\(\rightarrow\) How were you old ?

I have three day off next week. I (visit) .will visit .. my grandparents.

1.I'm sorry.I(not finish)... haven't finished ....this work yet

2.Poems as well as play(write). were written ........by William Shakespeare

3.How many times have you(be)..been.....to Van Mieu?

4.They like (chat).. chatting ......They use the Internet very often

5.I(have). was having ......a phone call while I(surf). was surfing .........the web yesterday

Fill in the blank with a correct preposition

1. He is always troubled. with ....his future.

2. She left ..without...saying goodbye...to....us.

3.I saw him. through ..the crowd.

4. Glass is made. from ..bottles.

5. Dang Thai Son is good. at ..piano.

6. Rubber is used .to ... making tyres and other things.

7. They are not different. from ...one other.

8. I am grateful. to ...you..for ...your help.

9.He looked .at...me. with..a smile.

10.Their export are just .from ...ours.

Số quả cam Lan hơn Linh la :

10 - 2 = 8 ( qua )

Vậy Lan hơn Linh 8 quả cam

Choose the word with different stress pattern

1.

A . Toothpaste

B . Sandwich

C . Cartoon

D . Chocolate

2.

A . Aerobics

B . Activity

C . Badminton

D . Basketball

3.

A . Police

B . Gymnast

C . Teacher

D . Farmer

4.

A . Different

B . Dangerous

C . Difficult

D . Delicious

5.

A . Visit

B . Unload

C . Receive

D . Correct