His parents are very concerned about his son at school because he _______moving in his seat._刷题宝

题干

His parents are very concerned about his son at school because he _______moving in his seat.

A：is always keeping

B：always kee

C：does kee

D：has always kept

上一题下一题 0.0难度选择题更新时间:2017-06-04 12:42:31

答案(点此获取答案解析）

A

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\frac{1}{2}

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\frac{22}{11}

\frac{15}{15}

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中，真分数有____，能化成带分数的假分数有____．

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例：又（窄）又（深）

又____又____ 又____又____

又____又____ 又____又____

又____又____

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