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However, at times this balance in nature is disturbed, ____ a number of possibly unforeseen effects.
A. lying in B. calling in C. taking in D. resulting in
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Michael ________ football regularly for many years when he was young.
A. was playing B. played C. has played D. had played
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______to sunlight for too much time will do harm to one’s skin.
A.Exposed B.Having exposed
C.Being exposed D.After being exposed
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______ with his office work, he had no time to attend to his sick daughter.
A. Keeping occupying B. Kept occupied C. Keeping occupy D. Keeping to occupy
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Our boss is very ________; he doesn't call anyone by their first name.
A. formal B. casual C. patient D. simple
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I used to drink a lot of tea but these days I __coffee.
A. prefer B. preferred C. have preferred D. am preferring
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This may sound silly to you,but if you think about it a little, it may not seem so strange ______.
A. after all B. for all C. in all D. above all
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he mother did not know _____ to blame for the broken glass as it happened while she was out.
A who B when C how D what
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My parents have promised to come to see me before I _______ for Africa.
A. have left B. leave C. left D. will leave
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It was reported that the passenger ship was sailing eastwards in the Atlantic Ocean ______ its captain and some passengers on board_______ something supposed to be a UFO flying overhead.
A. while; caught sight of B. when; caught sight of
C. as; saw D. since; caught a sight of
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