With an appropriate relative pronoun or relative adverb:That is the reason
1
he is leaving so soon.
1、
【正确答案】
1、正确答案:for which
【答案解析】
解析:关系分句中缺少介词for,可以将for提前。the reason作先行项,且在关系分句中作介词for的宾语,因此关系代词应选which。介词for与which共同引导关系分句。答案为for which。
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