Although your son made some mistakes, he worked hard at his lessons. You shouldn’t be hard ______ him.
| A．in | B．at | C．on | D．for |
11-12高一上·江苏南通·期中 查看更多[1]
（已下线）2011-2012学年度江苏省启东中学高一上学期期中考试英语卷
更新时间：2016-11-26 04:20:34
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【知识点】 be hard on sb.
