单项选择题
He's working hard for fear that he()
A. should fall behind B. fell behind C. may fall behind D. would fall behind
单项选择题 — Can I help you— Well, I'm afraid the box is () heavy for me, but thank you all the same.
单项选择题 —Was the house master strict—Yes, he requested that we () television on week nights..
单项选择题 As the teacher has announced, () will be open thmorrow.