问题

She wrote a month ago, ______ we’ve heard nothing.

A:since when
B:before which
C:since that
D:after which

正确答案是：

同类题型

think you’d better _____ your spare time better.

下列各句中加横线成语使用正确的一项是

This ________ Linda. ______ is my sister.

There are ______ students in our school.

What do you think of the film Avatar—This is the best film_______ I have ever seen．