II、单项填空(共20分)
21. Tom as well as his classmates _____ Japanese in Japan.
A. are studying B. have studied C. studies D. study
22. -Why, I couldn’t get you on the phone this morning.
--We _____ tennis in the yard when you called.
A. must be playing B. could be playing
C. must have played D. must have been playing
21. Tom as well as his classmates _____ Japanese in Japan.
A. are studying B. have studied C. studies D. study
22. -Why, I couldn’t get you on the phone this morning.
--We _____ tennis in the yard when you called.
A. must be playing B. could be playing
C. must have played D. must have been playing

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