题目内容

Jim was late for two classes this morning. He said that he forgot both of the ______.
A.rooms numberB.room numberC.room’s numbersD.room numbers
D
room 为无生命名词,不用 room’s 这样的所有格形式,在此可直接用名词作定语。类似地,下面一题要选B,也是一样的道理(名词作定语通常用单数不用复数):
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