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求解析两道英语单选题1.I heard that the boy ______ by his mother after

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求解析两道英语单选题
1.I heard that the boy ______ by his mother after breaking a vase.
A.has been punished
B.have been punished 答案选B
2.The problem is ______ he has never returned the money he borrow from me.
A.whether
B.what
C.that
D.how 答案选C
第一题B选项是 Had been bunished不好意思啦
第一题不可能是b 在,对下答案,第二题 is 后是表语从句不缺成分
再问: 第一题B选项是 Had been bunished不好意思啦,第二题麻烦详细点,没听懂
再答: 呵呵,他被惩罚发生在heard 之前,而其主句用的是过去式,从句是发生在过去的过去,应用过去完成式 第二题 is 后that引导的是表语从句且不缺成分whether .what .how 在句中要作成分,不满足这题的要求 got it ?