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问题: 单选27

After a knock at the door, the child heard his mother’s voice ______ him.
A. calling B. called C. being called
D. to call

解答:

After a knock at the door, the child heard his mother’s voice ___A___ him.
A. calling B. called C. being called
D. to call
敲门一下,孩子听见他妈妈的嗓音--叫他呢.使用v-ing形式是表明动作的延续性.hear sb. do/doing sth.所以其他形式都是有问题的.被动语态最讲不通.综上选A