Taking a boat to school _____ a lot more fun than taking a bus.[ ]A. must ha

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Taking a boat to school _____ a lot more fun than taking a bus.[ ]
A. must have
B. must be have
C. must be

答案

举一反三

Both of his parents died of illness so he support his family at the age of 14. [ ]
A. must
B. should
C. could
D. had to

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You _____ right.[     ]
A. may be
B. maybe
C. can be

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— Where"s Lucy, please?
— She _____ be in the library.[     ]
A. can
B. need
C. could
D. may

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Henry ________ be at home because he phoned me from the farm just now.[     ]
A. mustn"t
B. might not
C. isn"t able to
D. can"t

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You needn"t_       for him. [     ]
A. to wait
B. waiting
C. wait
D. to waiting

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