______ at in this way the air pollution in this region doesnt seem so serious.A.Having lo
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______ at in this way, the air pollution in this region doesnt seem so serious.
A.Having looked
B.Looked
C.Looking
D.To look
请帮忙给出正确答案和分析,谢谢!
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正确答案:B
分词用法。本题分句的主语是theairpollution,与动词look应该构成逻辑上的被动关系,因此应选过去分词。B符合题意;A和C都表主动,D用在句中语意不通。
