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   问题:

【1.()whenwedoexercises,wemustbe____A:aswecanascareful;B:aswecanascarefully;C:ascarefulaswecan;D:ascarefullyaswecan.】

问题描述:

1.()whenwedoexercises,wemustbe____

A:aswecanascareful;B:aswecanascarefully;

C:ascarefulaswecan;D:ascarefullyaswecan.

刘佩珊回答:

  C