\(a,A=14\sqrt{2}-9\sqrt{2}\\ =5\sqrt{2}\\ b,B=5\sqrt{10}+10-5\sqrt{10}\\ =10\)

Choose the best answer:

1. I bought this dress at the ---------- on Hang Bai street.
A. clothes' store B. store of closes C. clothes store D. clothing store
2. Isn't it easy to learn English well?
A. No, it is B. No it does not C. Yes, it is D. Yes, it does
3. There are two restaurants in the town and ----------- of them are extremely good.
A. each B. all C. both D. most
4. My funny story made the whole class -----------
A. smile B. laughing C. laugh D. crying
5. Nam spends ---------- time playing video games
A. a few B. a little C. many D. any
6. If he eats all that food, he eats -------------
A. quite much B. too many C. quite many D. too much .

Mary couldn't go to class yesterday. I wish she had gone to class yesterday.

1. We haven't been to the concert for over a year.

=> The last time we were to the concert was over a year ago.

2. We last saw our grandfather two years ago.

=> It's two years since wa last saw our grandfather.

\(a,A=\sqrt{5}-2\\ b,B=3-\sqrt{2}\\ c,C=3-a+a-9\\ =-6\\ d,D=2a+5-2a+7\\ =12\)

1. Every year, my mother (give) gives me a nice doll on my birthday.

2. My brother (not like) doesn't like collecting stamps, he likes collecting glass bottles.

3. Lisa (drive) drives her sister's car today .

4. I never (smoke) smokes cigarettes.

3) A volunteer always helps (help) other people willingly and without payment.

4) we have just decided (Just/decide) to clean up the lake because it s' full of rubbish.

1. Gạch chân từ được chọn để hoàn thành câu:

1. She comes from ( American/ America/ Rusian) . She speaks English?

2. Long's ball is new but (ours/ their/ her) isn't.

3. The children ( are/ was/ were ) still tired today because they ( have/ had/ having ) a big party.

7. Tom has a headache. He ( drank/ took/ takes) some aspirins.

2. Tìm giới từ thích hợp điền vào chỗ trống trongt các câu sau:

1. My father is very hard. He's working on a farm.

2. Spring is the most beautiful season in Vietnam.

3. Where is the map in the World?

4. Long and his friend are playing chess under the tree.

5. The dog is playing with a ball on the table.

6. David often sits between two his closed friends in the class.

Câu 1 là an hour. Viết nhầm :3

1, Someone gave Mary this present an hour ago.

=> Mary was given this present a hour ago.

2, People can find a cure for cancer in the near future.

=> A cure can be found for cancer in the near future.

3, Soneone might steal your bike if you leave it outside.

=> Your bike might be stolen if you leave it outside.

4, They ought to knock down the old building.

=> The old building ought to be knocked down.