Theproblemhereferredto________diff

发布时间：2020-07-27 05:03:07

The problem he referred to ________ difficult, but it isn't at all.A.must beB.seemedC.can't beD.seems

网友回答

D解析首先确定时态为一般现在时。由后文“it isn't at all”可知题目看似难而不难。“he referred to”为定语从句。
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