问题

It isn’t quite ______ whether the teacher will collect the homework by Friday, so you needn’t hurry.[ ]

A: sure
B: right
C: certain
D: exact

正确答案是：

同类题型

I hope ______ on time.

What do you think of the White House— Splendid. While I was studying in America, I ________ it twice.

Hearing the dog barking fiercely, away__________.[ ]

Are these yourkeys — __________.

Could you please give me some advice ____ studying English?.