bài 1 :

1 it 's interesting that making toys from used paper

2 it 's  over 20 years since he last came back to his home village 

3 i have never seen any film as strange as that film

4 we haven't met each other for ten years

5 mai said ( that) it was raining heavily outside

6 is this the first time you have played a computer game?

7 the statue of liberty was presented to the United state by France in 1876

8 the water wasn't hot enough for the children swim on it

9 experiments on animals should be stopped

10 ann ask me if i would done the English test the following day

 bài 2:

1 i haven't seen him since we left school

2 this is the first time Tim has seen rice paddies

3 compost is made from household and garden waste

4 he told me that he borrowed book in school library

5 would you ( don't) mind if i sat here?