—I think 20 dollars for it is OK.—No I’d gladly pay for it.A. twice as much B. three times

问题补充：

—I think 20 dollars for it is OK.

—No,I’d gladly pay for it.

A. twice as much

B. three times of what

C. the price twice

D. as much three times

答案：

(答案→)A. twice as much

B. three times of what

C. the price twice

D. as much three times

解析：twice as much表示“是……的两倍”。as much 等于as the same number of，表示“量”。