问题

There’s no doubt _____enough concern must be paid tothe problem of the stayathome children.

A:which
B:whether
C:that
D:what

正确答案是：

同类题型

Are you content with her lecture—-Far from that It _______

You look pale. What’s _______ with you —I have _______ headache.

Can you imagine _______ in the future

What youfor your vacation–I plan to visit my grandparents.

_______ all the stars, the sun is _____________ to the earth.