问题

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

A:why
B:when
C:whether
D:what

正确答案是：

同类题型

We are glad to hear that the terrorists by the policemen several days ago.

With a lot of modern office equipment, today’s schools are quite different from ____ of the past.

What did you buy for your daughter at the supermarket—— I bought_______, because I couldn’t find________ she likes.

We felt amazed at the use　　the waste bottles.

It is what you do ________ what you say that matters.[ ]