单选题
One of the workers (has) (hung) the curtains that (had) been (laying) on the floor.
A. has
B. hung
C. had
D. laying
A
B
C
D
【正确答案】
D
【答案解析】
改为lying。lie表示“躺,位于”时,过去式是lay,现在分词是ly-ing。而lay为动词“放置,搁放”的原形,如lay the table。此处为前者,故用lying。
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