问题

The left-behind kids(留守儿童)can’t see their parents_________ the parents come back home from work.

A:but
B:until
C:or
D:if;

正确答案是：

同类题型

This painting is so valuable that it is rather difficult to calculate _______ its price would be if the museum _______ to sell it.

k you should complain—_________ , of course, you are happy with the way things are.

When did the Shanghai Expo open —_______May 1st, 2010. A．In

He was busy writing a story, only ______ once in a while to smoke a cigarette.[ ]

________ there are living creatures in the outer space as those on Earth hasn’t been proved until now