When in Rome do the Romans do. [ ]A. as B. how C.what

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When in Rome do             the Romans do.      [     ]
A. as
B. how
C.what
D.that

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举一反三

The English book was so interesting that he had read it for 3 hours_________he realized.    [     ]
A.   when
B．until
C．before
D．after

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I can"t go to school today,         I got a bad headache last night.            [     ]
A. and
B. or
C. because
D. so

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I won"t go _____ he comes back.           [     ]
A. until
B. while
C. when
D. why

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We can"t do well in examinations          we study hard in school time.[     ]
A. if
B. and
C. since
D. unless

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Don’t get off the bus          it has stopped.              [     ]
A．until
B．if
C．to
D．at

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