We pulled him out of the river and tried to revive him, but to no ().
We pulled him out of the river and tried to revive him, but to no ().
A、use
B、help
C、trail
D、avail
【正确答案】:D
【题目解析】:to no avail 是固定搭配,意为“无效,不起作用”。因此选D。我们把他从河里拉出来想使他恢复知觉,但没有成功。
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