I _____ swim last year. [ ]A. canB. could C. can to D. could to

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I _____ swim last year. [ ]
A. can
B. could
C. can to
D. could to

答案

举一反三

Could you please _____ the window? I feel a little cold. [ ]
A. not to open
B. not open
C. not to close
D. not close

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—Must I finish writing the composition today?
—Yes, you ____.

[ ]

A. must
B. can
C. need
D. may

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—Excuse me, could I borrow some money from you?
—Of course you _____. [ ]
A. could
B. can
C. must
D. need

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Four hundred dollars for a pair of shoes?
You _____ be joking! [ ]
A. may
B. can
C. need
D. must

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—Have you seen my glasses? I _____ find them.
—Sorry, I haven"t seen them.

[ ]

A. can"t
B. shouldn"t
C. won"t
D. mustn"t

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