You _____ return the book now.You can keep it next week.
A. can't
B. mustn't
C. don't have to
D. may not
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--Would you come and join them?--I wish I ______. But I am busy at this moment.
A. can't
B. couldn't
C. could
D. can
Two eyes _____ see more than one.
A. can
B. may
C. have to
D. should
--How _____ ______ the watermelons?--Two yuan 1 pound.
A. many; is
B. much; are
C. many are
D. much; is
--How ______ bananas do you need?--I need 3, please.
A. much
B. many