Cho mình xin lỗi. Chỗ câu 11 là have been

- I play skipping rope.

- I play shuttlecock sport.

- I chat with my friends.

- I go to the canteen to find somthing to eat or drink.

- I review my lessons before the class start.

- I do the exercise/aerobics.

- I play hide-and-seek.

- I play blind man bluff.

- I read a book in the library.

- I go the library to borrow some books.

I want to help the community by cleaning up the streets and lakes. I really want to do this volunteer work because I want to make a difference in our community. At first, I think it'll be very great if I can do it myself. But on second though, I see that it's too difficult for me to do it alone so I asked my friends to help me and they agreed. All we do is put all the garbages into the waste basket and send it to the place that the people will recycle them. To be honest, after do these things, I fell very happy because I can not only help the others but also our community too. It'll be a better place.

My hometown is Duy Xuyen District in Quang Nam Province. It is a peeacful countryside in the the central of VN. My hometown is really famous. Not only the Vietnamese but also the foreigners know it because there are two worlf herritage sites at one destionation. They are: My Son Tower and Hoi An Ancient Town.

My Son Tower is in Duy Phu. It is an interesting place to visit with a lot of old temples, caves and statues. When you visit My Son, you can know more about Cham's life. Especially, you can also enjoy the Apsara's Dance. It's really exciting.

Hoi An Ancient Town is a very very old city. It has a lot of historic building and it has a bidge called Chua Cau. Hoi An attracts a lot of foreigners come here to visit. I would say the greatest thing in Hoi An is there are many kinds of food there. If you have a chance to visit Hoi An, you can enjoy a lot of speccial food like: Cao lau, Mi quang, Com hen... All of them are extremlly delicious.

Actually, I love my hometown a lot and I also proud of it. Someday, if I have to go far from my hometown, I'll never forget Quang Nam-my hometown, the place I was born and grew up.

1. have visited.

2. has read.

3. haven't begun.

4. met.

5. has been

6. haven't started.

7. did your father give up.

8. Did you wash.

9. called.

10. moved.

11. has been.

12. have gone.

13. spent.

14. has explained.

15. has taken.

16. delivered.

17. hasn't finished.

18. haven't seen.

19. heard.

20. haven't seen.

Có cần đưa vào tin trên những chi tiết: đoàn đi về bằng phuơng tiện gì, ai làm trưởng đoàn, các thí sinh đã mang về được những quà lưu niệm gì,… không? Vì sao?

Thực hiện các phép tính sau:

c)  16 a 4 b 6 128 a 6 b 6 với a < 0, b khác 0