1: c

2: b

3: b

4; a

5: c

6: b

7: a

8: b

9: c

10: a

II: 

1: fell off/ on

2: for

3: on

4: about

5; with

6: with

7: for/up

8: into/ on

9: between

10: on

II:

1: will go/ stops

2: won't come/ aren't

3 will come/ leave

4: will phone/ arrive

5: see/ will give

6: will leave / rises

7: will move

8: will look after/ is

9: will be / don't hurry

10: will bring/ return 

III:

1, Where is the nearest post office?

=> Could you show me the way to the nearest post ofice?

2, Open the door, please.

=> Will you open the door?

3, Hanh is studying very hard because she doesn't want to fail in the exam

=> Hanh is studying very hard in order not to fail in the exam.

4, Do you want me to drive?

=> Shall I drive ?

5, I want you to help me carry my bags

=> Can you carry my bags ?

6, He climbed the tree because he wanted to get a better view

=> He climbed the tree so as to get a better view.

7, I have decided to help him revise his lessons

=> I am pleased to help him revise his lessons.

8, We are willing to drive you to the airport

=> We'll drive you to the airport.

9, You can get off this train at Bath

=> This train at Bath can be got off

10, 'Plaese send an ambulance to Quang Trung school,' Lan said to the nurse

=> Lan asked the nurse to send a ambulance to Quang Trung school.