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
It is about ten years _____ I met you last.
They will never succeed, _____ hard they try.
_____ still half drunk, he made his way home.
_____ she was very tired, she went on working.
Busy _____ he was, he tried his best to help you.