I was drawing a horse _____ the teacher came in. [ ]A. while

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I was drawing a horse _____ the teacher came in.   [     ]
A. while
B. as
C. when
D. the moment

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举一反三

Stop smoking____you will get better soon.[     ]
A. and
B. Or
C. but
D. after

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Stephen Hawking can"t walk or even speak,______ he has become very successful.   [     ]
A. but
B. and
C. or
D. then

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Feed the birds every day,_____ they will die. [ ]

A. but
B. or
C. so
D. even if

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_____you _____he are able to ski,but I am not.    [     ]
A. Neither; nor
B. Not only; but also
C. Either;or
D. Both;and

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These story books for children are awfully written. They _____ are interesting_____ exciting. [ ]

A. either; or
B. neither; nor
B. both; and
D. not only; but also

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