组卷网 > 高中英语综合库 > 语法 > 句法 > 复合句 > 名词性从句 > 主语从句 > 主语从句的连接词
题型:单项选择 难度:0.65 引用次数:1256 题号:364571
Before a problem can be solved, it must be obvious ________ the problem itself is.
A.whatB.thatC.whichD.why
2011·湖南·高考真题 查看更多[6]
【知识点】 主语从句的连接词

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