do you play tennis? I play it three times a week. A. WhatB. HowC. D. What’s

问题补充：

do you play tennis? I play it three times a week.

A. What

B. How

C.

D. What’s

答案：

A. What

B. How

(答案→)C.

D. What’s

解析：通过下文我每周打三次，可以看出前面用选C，How often多久一次。