He looks so weak and pale suffering from a serious illness.A. as ifB. as long asC. now th

问题补充：

He looks so weak and pale suffering from a serious illness.

A. as if

B. as long as

C. now that

D. even if

答案：

(答案→)A. as if

B. as long as

C. now that

D. even if

解析：词义辨析。as if仿佛，好像；as long as只要；now that由于，既然；even if

即使，甚至；句意：他看起来如此的虚弱，苍白仿佛才从一场大病中恢复过来。选A。