Younger adults who get either little sleep or a lot of it ________ see a greater expansion in their waistlines over time. A. may B. must D. need D. shall
. -----Has he changed his mind? -----Yes. After some hours of discussion, I ____ to talk him into accepting the new plan.
. I got an e-mail from Liu Xin, ___ said she was going abroad for further study.
The fact that people are afraid to go out at night is often a result of perceived (感知) danger ________actual danger.
In Hangzhou, Mr. Black was so struck ______ the beauty of nature that he stayed ________ another night.
It is morning _____ we have four classes, not afternoon.