题目内容
---Who is making much noise?
---It ____ be Timmy. He is sleeping now.
A. can’t B. may not
C. mustn’t D. couldn’t
练习册系列答案
相关题目
题目内容
---Who is making much noise?
---It ____ be Timmy. He is sleeping now.
A. can’t B. may not
C. mustn’t D. couldn’t