组卷网 > 高中英语综合库 > 语法 > 句法 > 复合句 > 名词性从句 > 表语从句 > 表语从句的连接词 > that
题型:单项选择 难度:0.65 引用次数:236 题号:17817695
The reason ________ the injection needs repeating every year is ________ the virus changes.
A.why; becauseB.why; that
C.that; whyD.that; because

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