she exercise every day? 　A. DoB. DoingC. DoesD. Did

问题补充：

she exercise every day?

A. Do

B. Doing

C. Does

D. Did

答案：

A. Do

B. Doing

(答案→)C. Does

D. Did

解析：句意；她每天锻炼吗？every day每一天，常用于一般现在时。 exercise行为动词，锻炼，对他的提问，应用助动词do/does,主语为三单，故用does.