It looks you are ill. You should go to see the doctor.A. asB. as thoughC. whichD. whether

问题补充：

It looks you are ill. You should go to see the doctor.

A. as

B. as though

C. which

D. whether

答案：

A. as

(答案→)B. as though

C. which

D. whether

解析：考查固定句型。It looks as if….看起来似乎….好像….;句意：你看起来好像病了，应该去看医生了！