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.
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