—Howmanystudentsarethereintheclassroom?      —

问题详情：

—How many students are there in the classroom?

       —_____ I don’t know where they have gone.

       one.       .           dy.         ing.

【回答】

B  根据I don’t know where they have gone. 可知此处填none，表示“一个人也没有”。故选B。

知识点：不定代词

题型：选择题