______ he comes, we won"t be able to go.[ ]A. Without B. UnlessC. E

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______ he comes, we won"t be able to go.[    ]
A. Without
B. Unless
C. Except
D. Even

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举一反三

He was too tired    _     doing the housework. [     ]
A. because of
B. because
C. so
D. to

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-How do you like the concert given by the "Foxy Ladies"?
-Exciting. _____ one piece of music wasn"t played quite well.[ ]

A. so
B. though
C. because
D. and

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I study hard          I can catch up with my classmates.     [     ]
A. so that
B. because
C. in order to
D. as

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

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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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