题目内容

34.They were surprised that a child should work out the problem__________they themselves couldn't.

A. once
B. then
C. while
D. if

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35.All of the flowers now raised here have developed from those__________in the forest.

A. once they grew
B. they grew once
C. that once grew
D. once grew

36.I had hardly reached the airport__________he started for his destination.

A. then
B. when
C. the moment
D. than

37.He insisted that we__________the night in his house.

A. would spend
B. shall spend
C. should spend
D. spent

38.At the back of the house, there is a path__________the river.

A. leads to
B. led to
C. leading to
D. has led to