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问题

____________ the situation, Charles Yerkes undertook____________ the system in 1902 by obtaining ownership of many different lines.

A:Seeing, improving
B:Seen ,improved
C:To see, toimprove
D:Having seen,improving
正确答案是:
同类题型

Two thirds of the population of the village ________ farmers. The number of them ________ about 2,000.

It’s the _______ that caused the big forestfire. A young man dropped it carelessly at picnic.

Mary runs ______ of all the girls in her school, and she won the 100-meter race last month.

It surprised us all ______ good manners the monitor had.

I missed the first part of the film .It was really a pity.—You ________home half an hour earlier.

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