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1.Jim was late for two classes this morning.He said that he

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1.Jim was late for two classes this morning.He said that he forgot both of the ______.
1.Jim was late for two classes this morning.He said that he
classes
再问: 选项:  A. rooms number B. Room number   C. Room’s number D. Room numbers
再答: 晕死,怪不得。。。选D,忘了2个房间号嘛。
再问: 那为什么room不用加S啊
再答: 在学习名词的时候,不是学过名词在做定语起修饰作用的时候,不用所有格嘛,比如:fruit shop 这里还有both of,当然就选D了。