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
网友回答
A. increased by
B. increased to
C. 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。