Chia dạng đúng của động từ trong ngoặc:

7.I am not good at Math. (not be)

8.I and Mai are friends. (be)

9.It isn't a table. (not be)

10.We are students of Yen Vien Secondary School.

11.How old are you? (be)

12.How old is she? (be)

13.Who are they? (be)

14.This is a book and these are pens. (be)

15.Are you in class 4a? (be)

16.There are many flowers in my garden. (be)

17.There aren't any flowers in my garden. (not be)

18.Are there any flowers in your garden? (be)

19.I am not a student in class 5C. (not be)

20.What time is it? (be)

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Trả lời:

1.I often do morning exercise. (do)

2.She always talks at class. (talk)

3.They go to school by bus every morning. (go)

4.Where do you live? (live)

- I live in Yen Vien Town.

5.How does she go to school every day? (go)

6.Nam likes ice - cream. (like)

7.I and my mother usually go to the market on Sunday. (go)

8.When does your mother cook every evening? (cook)

9. Does your father work in the farm? (work) 

- Yes, he does

10.Do we study on Monday? (study)

11.Does Mai study in your class? (study)

- No, she doesn't.

12.Do you speak English?

- Yes, I do

13.Do they get up at 6.o ' clock? (get up)

14.How does your children go to shool every day?

15.He lives in Ho Chi Minh City. (live)

16.He doesn't live in Ho Chi Minh City. (not live) 

17.Lan (have) has breakfast and (go) go to school at 6 a.m.

18.Sometimes, I play badminton. (play)

19.Every night, we go to bed at 10 p.m.

20.We usually (read) read book, (listen) listen to music or (watch) watch TV in the afternoon. 

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How do you orgazine your collection?

I divide different groups of animails, plants, birds and so on 

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Trả lời:

(+)  Somebody is responsible for this mischief.

(-)   Somebody isn't responsible for this mischief.

(?)  Is somebody responsible for this mischief ?

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A: How can you collect your stamps?

B: Sometimes I exchange stamps with orther people

My parents just bought a new pair of roller skates

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\(\frac{1}{1.2}+\frac{1}{2.3}+....+\frac{1}{99.100}\)

= 1.(\(\frac{1}{1}-\frac{1}{2}+\frac{1}{2}-\frac{1}{3}+.....+\frac{1}{99}-\frac{1}{100}\))

= 1.(\(\frac{1}{1}-\frac{1}{100}\))

= 1.\(\frac{99}{100}\)

= \(\frac{99}{100}\)

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