Bob and David are （） A ：in classroom B：in their classroom C：in the his classroom

题目

Bob and David are （） A ：in classroom B：in their classroom C：in the his classroom
但A为什么不可以

答案

B：in their classroom
classroom 是单数可数名词.英语中单数可数名词前要有诸如冠词,指示代词,物主代词等限定词.
如：这是书.不可以说：This is book.
要说：This is a book
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Bob and David are （ ） A ：in classroom B：in their classroom C：in the his classroom

Bob and David are （ ） A ：in classroom B：in their classroom C：in the his classroom

Bob and David are （） A ：in classroom B：in their classroom C：in the his classroom

Bob and David are （） A ：in classroom B：in their classroom C：in the his classroom