Prices are always rising these days. Up to now, the petrol price 20%.A. increased byB. in

Prices are always rising these days. Up to now, the petrol price 20%.
A. increased by
B. increased to
C. has increased to
D. has increased by

A. increased byB. increased toC. has increased to (答案→)D. has increased by解析：考查时态和介词：时间是Up to now,时态是现在完成时，句意：价格最近一直在上升，到现在为止，石油价格已经上升了20%。Increase by上升了。选D。

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