问题 选择题

If you feel tired and sick of fat food, that is ______ you have to go to the hospital for medical examination.

A.why

B.whether

C.when

D.what

答案

答案:C

主要测试表语从句。译文:如果你感到疲惫,而且不喜欢油腻食物,那就是你必须去医院做个检查的时候了。

单项选择题
单项选择题