Ex1. Write as example.

VD: play à plays

Ex 2: Write the correct forms of the verb in the brackets

VD: I (be)  am  in class 4B.

1. My mother often ( water) __________ the flowers in the morning.

2. My father ( not go ) __________ to work by motorbike every day. He (go) ______by bus.

3. My brother never (go) __________ swimming because he can’t (swim) ________.

4. We (brush) _________ our teeth twice a day.

5. Nam and Phong usually (play) _________ football in the afternoon.

6. My sister ( study) _________ at Nguyen Du Primary School.

7. The Browns (be) _________ from England.

8. My school (be) _________ big and nice.

9. I (not have) _________ English on Mondays.

10. Peter ( have) _________ some pets.

Ex 3. Circle and correct one mistake in each sentence.

1. How old are you? - I am fine.

Mistake: fine

Correct mistake: fine => one, two, three, four, five, six, seven,...

2. There are a kitchen in my house.

Mistake: are

Correct mistake: are => is

3. She often visit her grandma on Sundays.

Mistake: visit

Correct mistake: visit => visits

4. How many dolls does your sister has?

Mistake: has

Correct mistake: has => have

5. Peter often go swimming in the afternoon.

Mistake: go

Correct mistake: go => goes

6. I studies at school from Monday to Friday.

Mistake: studies

Correct mistake: studies => study

7. Nga’s brother does not likes dancing. He likes singing.

Mistake: likes

Correct mistake: likes => like

8. My sisters never plays football and volleyball.

Mistake: sisters or plays

Correct mistake: sisters => sister or plays => play

9. My father often watchs TV after dinner.

Mistake: watchs

Correct mistake: watchs => watches

10. Where’s the balls? - They’re under the table.

Mistake: Where's 

Correct mistake: Where's => Where're

Ex 2: Write the correct forms of the verb in the brackets

VD: I (be) am in class 4B.

1. My mother often (water) waters the flowers in the morning.

2. My father (not go) doesn't go to work by motorbike every day. He (go) goes by bus.

3. My brother never (go) goes swimming because he can’t (swim) swim.

4. We (brush) brushes our teeth twice a day.

5. Nam and Phong usually (play) plays football in the afternoon.

6. My sister (study) studys at Nguyen Du Primary School.

7. The Browns (be) are from England.

8. My school (be) is big and nice.

9. I (not have) don't have English on Mondays.

10. Peter (have) has some pets.

Ex1. Write as example.

VD: play => plays

(12) watered

(13) cooked

(14) played

(15) enjoyed

does

A. When does she have English?

B. Mrs Vicky is baking birthday cake in the kitchen.

Bài giải

Số lớn nhất có hai chữ số khác nhau là: 98

Số lẻ nhỏ nhất có hai chữ số là: 11

Tích của số lớn nhất có hai chữ số khác nhau và số lẻ nhỏ nhất có hai chữ số là:

98 x 11 = 1078

Đáp số: 1078.

Bài giải

Đổi: 1 giờ = 60 phút; 1 giờ 15 phút = 75 phút

Trung bình mỗi phút vòi chảy được số lít nước vào bể là:

(768 + 852) : (60 + 75) = 12 (lít)

Đáp số: 12 lít nước.

Bài giải

Đổi: 1 giờ = 60 phút; 1 giờ 15 phút = 75 phút

Trung bình mỗi phút vòi chảy được số lít nước vào bể là:

(768 + 852) : (60 + 75) = 12 (lít)

Đáp số: 12 lít nước.