—__ you swim? —Yes, but I"m not a good swimmer. [ ] A. Can B. May

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—__ you swim?
—Yes, but I"m not a good swimmer. [ ]

A. Can
B. May
C. Need
D. Must

答案

举一反三

We hope that as many people as possible ____join us for the charity show tomorrow.  [     ]
A. need
B. can
C. must
D. shou

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—May I go fishing with you,Dad?
—Of course .But you____finish your homework first.  [     ]
A. mustn"t
B. must
C. would
D. can"t

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—Who"s that boy reading in the garden? Is it David?
—It ____be David. I saw him in the classroom just now. [ ]

A. must
B. can"t
C. may
D. shouldn"t

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School _____allow students at least one hour a day for sports. [ ]

A. would
B. might
C. should
D. could

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—Where is Tom？
—I am not sure. He_____ be playing football on the playground.    [     ]
A. need
B. may
C. can
D. should

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