问题

Are you sure you have to ? It’s been very late— I don’t know _____ I can do it if not now

A:where
B:why
C:when
D:how

正确答案是：

同类题型

Did you watch the football game on TV last night?-Yes,I did.It was________,and I enjoyed every minute of it.[ ]

Hikingby oneself can be fun and good for health. It may also be good for ______building.

Who dares to go ? How about you ? — Sorry , I ____ .

If you want to see the chairman, you’d better make an with his secretary first.

He is one of_______in China.