3/4 thế kỉ 5 năm = 80 năm

1.If my brother has enough money, he will buy a bicycle 

2.If I buy a new hat, I will give it to you 

3.If you ask the teacher, he will explain the lesson to you 

will make 

will invite 

go

asks 

don't get 

didn't => weren't

took => take

B

1.B

2.C

3.A

4 B