The drug used to treat this disease causes bad side effects, some of which ____ - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

The drug used to treat this disease causes bad side effects, some of which ________ deadly.

A．is	B．are
C．was	D．were

答案

解析

B 考察主谓一致。Some of which引导非限制性定语从句，在从句中做主语，修饰先行词bad side effects，故从句中使用复数形式，由此排除AC，由主句的时态和语境可知表示客观性，故使用一般现在时。故B正确。

核心考点

试题【 The drug used to treat this disease causes bad side effects, some of which ____】；主要考察你对句式等知识点的理解。[详细]

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