While Ann TV her father came home.A. is watchingB. was watchingC. watchD. watches

问题补充：

While Ann TV, her father came home.

A. is watching

B. was watching

C. watch

D. watches

答案：

A. is watching

(答案→)B. was watching

C. watch

D. watches

解析：while引导的时间状态从句常用进行时态