be nó bay rồi ;<

oh nô gõ máy ko may thíu gòi :< chắc bẹn được tích woá

nhường sao giờ :>>

nhớ someone làm giề có by nhỉ

30.Unless you start working hard now, you won't be able to pass the final test.

31.This garbage should be taken dump soon

a)\(\dfrac{9}{12}=\dfrac{9:3}{12:3}=\dfrac{3}{4}\)

Vì 2x4<3x3

=>\(\dfrac{2}{3}< \dfrac{3}{4}\)

b)\(\dfrac{4}{8}=\dfrac{4:4}{8:4}=\dfrac{1}{2}\)

Vì 1x3<2x2

=>\(\dfrac{1}{2}< \dfrac{2}{3}\)

1. Mr. Brown (come) came home as soon as he (finish) had finished his work.

2. I (live) had lived in Texas for 4 years before I (move) moved California.

3. When Mr. Smith (wake) waked yesterday morning, breakfast (already be) have already been ready.

4. Before I (get) got promotion, I (work) had worked very hard.

5. Yesterday, my mother (pick) had picked me up from school before we (go) went shopping together.

6. Our grandparent (tell) told us that he (serve) had served in the army in 1945.

7. After having dinner with my boyfriend, I (go) went home.

8. Yesterday (be) was the first time Jane (perform) performed in front of such large audience.

9. Peter (admit) admitted he (break) breaking my favorite vase the day before.

10. What had you done (you/do) before you (come) came there?

11. Yesterday I (feel) felt nervous as I (not prepare) didn't prepare my presentation carefully.

12. Did Peter come (Peter/ come) to see you after he (finish) had finished his work?

13. Mary (prepare) had prepared the meal before she (invite) invited her new neighbor to have lunch with her.

14. Before I (buy) bought a car, I (travel) had traveled by bus for nearly 5 years.

15. As soon as Jane (see) had seen Jim, she (storm) stormed out of the room.

UNICEF

1.I have learnt English for 10 years.

2.If you don't stop swimming in that like,you will have skin rashes.

3.The rescue workers will be sent to the flooded villages.

4.If I am you, I use energy efficent light bulbs.

5.The polluted environment makes birds leave their habitats and plants die.

6. Since I could swim, I went scuba diving with Terry. 

7. Because of his untidy room, his mother is unhappy.  

8. If Paul  had a car, He could drive to work.

1.did

2.after

3.feels

4.across

5.break

6.rules

7.it

8.vehicles

9.ride

10.accidents