they used to make --to meet and have a party at the end of a

问题描述:

they used to make __to meet and have a party at the end of a month.
为什么填it a rule而不是it rule
1个回答 分类:英语 2014-12-09

问题解答:

我来补答
同it is a rule to meet and have a party at the end of a month.
 
 
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