1. will walk

2.will call

3.costs

4.is

5.doesn't come

6.would go

7.would not have

8.got

9.had

10.were

1. If the train is late, we………………….. to the office. ( đk loại 1: có thật ở hiện tại ) 
walk
will walk
would walk
walks
Mục khác:
2. She…………………….. if she has time ( đk loại 1 ) 
calls
would call
will call
calling
Mục khác:
3. If it…………………..…. too much, I will buy the smaller one. ( đk loại 1 ) 
costs
will cost
would cost
cost
Mục khác:
4. If the class……………………….. full, we will find another one. ( đk loại 1) 
are
will be
were
is
Mục khác:
5. What will we do if the taxi…………………….….? ( đk loại 1 ) 
don’t come
didn’t come
doesn’t come
had not come
Mục khác:
6. If it snowed this summer, we…………………… skiing. ( đk loại 2: ko có thật ở hiện tại ) 
goes
will go
would go
go
Mục khác:
7. If you drove more carefully, you…………..……..so many accidents. ( đk loại 2 ) 
would not have
will not have
wouldn’t have had
has
Mục khác:
8. If he……………..………… up earlier, he’d get ( would get )  to work on time. ( đk loại 2 ) 
gets
will get
got
had got
Mục khác:
9. I would tell you more about it if we……………………………… more time. ( đk loại 2 ) 
has
have
will have
had
Mục khác:
10. If I……………….…….you, I wouldn’t worry about going to university. ( đk loại 2, trong đk loại 2 luôn sử dụng tobe were cho cả chủ ngữ số ít lẫn số nhiều ) 
am
were
be
had been