Câu 13: 

1, in

The book is in the backpack.

I am interested in drawing pictures.

2, on

The dishes are on the table.

She is keen on reading book.

3, at

I was watching TV at 10 p.m last night.

Look at that dress, It's beautiful!

4, after

He went to bed after he had brushed his teeth.

She took a rest after a hard-working day.

5, before

Before you left the classroom, you had had to turn off the light.

I had eaten breakfast before went to school yesterday.

6, between

My dog is sitting between two little boys.

The house which was built between the hotel and the office is my new house.

7, for

I have been looking for you for 5 years.

This birthday cake is made for you.

8, since

It was 6 years since my last saw him.

I have learn English since I was 10.

Câu 14:

1, câu điều kiện loại 1

If she don't go to the party, I will never make friend with her.

If you buy that DVD, you will regret.

2, because

I was fail the exam because my laziness.

Because he didn't drive carefully, he make a terrible accident.

3, so

I don't know anything so please don't ask me.

It was her fault so don't look at me like that.

  Chúc bạn học tốt :))))