—I’m sorry I have failed again in the math exam.— ?You’ve been working hard at the subject.
--Could you do me a favor? ---It depends on _____it is.
_____at what he said, she asked him why he said so to her.
Soon , Mary _____ the shock and became calm again.
The children were surprised by the sudden _____ of their teacher.
---Mike, you know, I have read the book twice! ---______? I have read it so many times that I can recite it now.