I"m sorry you"ve been waiting so long, but it"ll still be some time ______ Brian

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I"m sorry you"ve been waiting so long, but it"ll still be some time ______ Brian gets back.

[ ]

A. before
B. since
C. till
D. after

答案

举一反三

He was told that it would be at least three more months _____ he could recover and return to work.

[ ]

A. when
B. before
C. since
D. that

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It"s quite a time _____ Liu Xiang was injured in the foot, but we"re sure it won"t be long _____ he returns to
the track.

[ ]

A. after; when
B. before; since
C. that; when
D. since; before

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A computer is so useful a machine___ we can use everywhere.

[ ]

A. that
B. which
C. as
D. what

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John thinks it won"t be long _____ he is ready for his new job.

[ ]

A. when
B. after
C. before
D. since

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The school rules state that no child shall be allowed out of the school during the day, _____ accompanied
by an adult.

[ ]

A. once
B. when
C. if
D. unless

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