He said that he forgot both of the(room number)为什么选room number

题目

He said that he forgot both of the(room number)为什么选room number
A roomes number
B roome's number
C room number
D room numbers

答案

D考查名词作定语的用法.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,后面有both因此number做复数.