They were________their invention．They thought they could invent more things to make our life easier．...
2022-12-28 05:03:59 33次 2015年人教版初中英语九年级下册Unit14练习卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
They were________their invention．They thought they could invent more things to make our life easier．
A．angry with
B．proud of
C．strict in
D．tired of
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