Question

【题目】Sometimes it seems to bother the teacher ______ all the students are being too quiet.

A. how B. what

C. that D. where

Answer 1

【答案】C

【解析】考查主语从句。句意：有时候，老师似乎会觉得所有的学生都太安静了。此处it是形式主语，that从句是真正的主语。故答案为C。