问题

we admit that there are some problems with the new system, we believe they can be solved.

A:Until
B:While
C:As
D:Unless;

正确答案是：

同类题型

_______, he doesn’t study well

The boy is Tony Miller. Tony is his________.

Thanks for your help.–_________.

The teacher didn’t leave the classroom building until the papers _________ in the end.

Do you think the thief entered through the garage door?— No. If he had.I don’t believe he _____ the living room window. [ ]