While us her experience in Africa she couldn’t help crying.A. toldB. to tellC. is telling

问题补充：

While us her experience in Africa, she couldn’t help crying.

A. told

B. to tell

C. is telling

D. telling

答案：

A. told

B. to tell

C. is telling

(答案→)D. telling

解析：考察状语从句的省略。本句在while后面省略了she was，句意：当她在告诉我们在非洲的经历的时候，情不自禁地哭了。当状语从句的主语和主句的主语一致，且含有be动词的时候，可以把状语从句的主语和be动词一起省略。故D正确。