问题

_____more countries can use natural energyin the future remains to be seen.

A:Whether
B:This
C:who
D:If

正确答案是：

同类题型

____fire, all exits must be kept clear

Are you going to see the film Going Home directed by Zhang Yimou tonight— No. I it on the Internet.

Rather than _____ a newspaper at home, he prefers _____ badminton outside. [ ]

The most important thing for Lucy is to find a properjob，________ that she likes.

下列各句中，没有语病的一项是（）