题目内容
a bad habit is formed, it will take a long time to get rid of it.
| A.Ever since | B.While | C.Once | D.Even if |
C
考查连词的用法。句意:一旦坏习惯形成,它要花好长一段时间才能摆脱。Once 一旦。故选C。
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题目内容
| A.Ever since | B.While | C.Once | D.Even if |