Jim’s mother was shopping her mobile phone rang.A. whenB. whileC. what timeD. and

问题补充：

Jim’s mother was shopping her mobile phone rang.

A. when

B. while

C. what time

D. and

答案：

(答案→)A. when

B. while

C. what time

D. and

解析：选A，意思是当吉姆的母亲的手机响时，她正在购物。