When I first arrived ________San Francisco,I had a difficult time ________certai

题干

When I first arrived ________San Francisco,I had a difficult time ________certain aspects of the American way of doing things.

A．at;to understand	B．in;to understand
C．in;understanding	D．at;understanding

上一题下一题 0.64难度单项选择更新时间:2015-01-06 09:02:50

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