Your foreign teacher Miss Smith ________us English since five years ago．
A．taught B．is teaching
C．has taught D．teaches
Many students didn’t realize the importance of study______ they left school.
A. when B. until C. if D. after
---I haven’t seen my grandparents for long. I’m too busy _____them these days.
---Why not call them instead?
A. visit B. to visit C. visiting D. visit
The fans were so excited that they _______ their hands .
A. couldn’t stop clapping B. couldn’t stop to clap
C. can’t stop clapping D. can’t stop to clap
-- Must I return the book this week?
-- No， you_______. You can_______ it for 20 days.
A. mustn't; keep B. needn't; borrow
C. needn't; keep D. mustn't; borrow
-- Where is your father now?
-- He _____Hong Kong. He____ there for three days.
A. has gone to ， has been to
B. has been to ， has been
C. has gone to ， has been
D. went ， was
