It that he has been ill for a long time.A. seemsB. looksC. looks as ifD. seems as if

问题补充：

It that he has been ill for a long time.

A. seems

B. looks

C. looks as if

D. seems as if

答案：

(答案→)A. seems

B. looks

C. looks as if

D. seems as if

解析：seem好像;look看,看起来.句意:好像他已经病了很久了.在表示好像的含义seem不用搭配介词,故选A.