He coughed day and night.When he spoke,he often stopped ___.

问题描述:

He coughed day and night.When he spoke,he often stopped ___.
(A) to cough
(B) coughing
并请说明理由,

He coughed day and night.When he spoke,he often stopped _A__.
(A) to cough
(B) coughing
答案应选A.这句话的意思是讲"他白天黑夜的咳嗽.当他讲话时经常停下来咳嗽"
如选B的话意思就成了"他讲话时停止咳嗽"了!