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To see a dentist twice a year is very important for you.（改为用it作形式主语）
It is very important for you to see a dentist twice a year.
It is very important for you to see a dentist twice a year.

【答案】It is very important for you to see a dentist twice a year.

【解答】

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发布：2024/5/23 20:38:36组卷：69引用：2难度：0.5

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To see a dentist twice a year is very important for you.（改为用it作形式主语）It is very important for you to see a dentist twice a year.It is very important for you to see a dentist twice a year.