John fell asleep _____ he was listening to the music．[ ]A. after B. bfore

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John fell asleep _____ he was listening to the music．[     ]
A. after
B. bfore
C. when
D. as soon as

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举一反三

Mr. Thin was very poor, ______ he was very happy. [     ]
A. and
B. but
C. or
D. so

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______ the twins enjoyed _______ at the party yesterday.[     ]
A. Both; them
B. Both; themselves
C. Neither;  them
D. All; themselves

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Movie Palace has comfortable seats; _______ it"s always too crowded.[     ]
A. and
B. but
C. so
D. or

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Mike isn’t good at swimming,______ he is good at football.[ ]
A. but
B. so
C. and
D. after

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—Be careful ,     __  you will make mistakes in your exams.
—I know that, Mum. One can never be too careful. [     ]
A. and
B. or
C. nor
D. but

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