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我们有必要每天记日记。(It is …) ___________________...

我们有必要每天记日记。(It is …)

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It is necessary for us to keep a diary every day. 【解析】 我们we/ us;必要necessary,形容词,在句中作表语;每天every day;记日记keep a diary;整理之后可以看出,这里是一个It is adj for sb to do sth的句型,真正的句子主语是to do sth部分,故答案为It is necessary for us to keep a diary every day.  
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