16. Li Na has______ great love of tennis when she was a child. That’s why she became _____ success in playing tennis in her later life.
A. the; the B. a; the C. the; a D. a; a
17. ----Hi, Nicholas. Any idea where Jack is?
----He _____ in the classroom. I saw him there just now.
A. shall be B. should have been C. must be D. might have been
