Mr. Black has been in Beijing a week. [ ]A. since B. for

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Mr. Black has been in Beijing             a week.   [     ]
A. since
B. for
C. after
D. before

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He told her _____ the accident.[ ]
A. of
B. on
C. about
D. from

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Be careful to look left and right before you go _____ the road. [ ]
A. across
B. will cross
C. cross
D. crossing

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We saw the football match _____ TV. [ ]
A. in
B. by
C. on
D. at

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The children are standing _____ to get on the bus. [ ]
A. on line
B. with a line
C. on a line
D. in line

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In the future people can read books only _____ computers, not _____ paper. [ ]
A. on; in
B. on; on
C. in; on
D. in; in

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