题目内容
【题目】The reason why he failed is he was too careless.
【答案】that
【解析】句意：他失败的原因是他太粗心了。reason作主语，后面的表语从句用that引导。所以答案是that。
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【题目】The reason why he failed is he was too careless.
【答案】that
【解析】句意：他失败的原因是他太粗心了。reason作主语，后面的表语从句用that引导。所以答案是that。