Mark ______ have hurried. After driving at top speed, he arrived half an hour early.

Jane’s pale face suggested that she_____ill, and her parents suggested that she________medical examination.

-___________you sing so loudly so late? Can`t you see it is already midnight? -Oh,sorry.

How _____ you say that you have made great progress since there are so many mistakes in your test paper ? 

 Mr. Li, a man calling himself Smith wants to see you. ________ he come in?