單項(xiàng)選擇題No one knows who will call()to solve the problem.

A.tune
B.tunes
C.the tune
D.a tune


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1.單項(xiàng)選擇題He was late()the traffic jam.

A.as result
B.as a result of
C.as the result of
D.a result of

2.單項(xiàng)選擇題There have been()medicine in the last 50 years.

A.great advancesin
B.a great advancein
C.great advanceon
D.a great advanceon

3.單項(xiàng)選擇題Would you mind()us how old you are?

A.tell
B.to tell
C.telling
D.to telling

4.單項(xiàng)選擇題50% of the people()for the survey were female.

A.were questioned
B.who questioned
C.who were questioned
D.question

5.單項(xiàng)選擇題There are many cities()very fast.

A.expand
B.which expand
C.which expanding
D.to expand