Dung is kind and helpful, but he is also a little careless _____________. A. at time B. at a time C....
2023-02-13 09:10:39 116次 2013-2014学年江苏省九年级上学期第一次过关检测英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Dung is kind and helpful, but he is also a little
careless _____________.
A. at time B.
at a time C.
at times D.
once a time
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