The shirt is so expensive. Can you reduce the price a third?A. toB. byC. ofD. at

问题补充：

The shirt is so expensive. Can you reduce the price a third?

A. to

B. by

C. of

D. at

答案：

A. to

(答案→)B. by

C. of

D. at

解析：句意：这件衬衫很贵，你能把它的价格降1/3吗？reduce by降了 ；reduce to表示“降到”根据句意故选B。