问题

What the doctor warned us is that the ________ sleep may cause anger,poor memory and poor concentration.[ ]

A:want in
B:plenty of
C:lack in
D:lack of

正确答案是：

同类题型

The employees were tired of working ______ hours and some of them even gave up their work.

Every boy and every girl as well as some teacherswho_____ to visit the museum______ asked to be at the school gate before 6 :00in the morning.

I love the internet. I’ve come to know many friends on the net.—________. Few of them would become our real friends.

I don’t believe him, we_______before. But I have to say you do look so familiar.

______ did Samuel stand by the window so long—To see what would happen.