We tried all sorts of medicine but they were all ____.
We tried all sorts of medicine but they were all ____.
A、use
B、useful
C、used
D、useless
【正确答案】:D
【题目解析】:use 使用,用途,useful 有用的,used 习惯的,二手的,useless 没用的
句意:我们试过各种各样的药,但都______这里判断使用x形容词形式,排除A,根据句意,D useless 符合题意

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