—Could you please take out the trash? —Sorry, I _____. I have to do my homework.

题型：湖南省期末题难度：来源：

—Could you please take out the trash?
—Sorry, I _____. I have to do my homework.

[ ]
A. couldn"t
B. can"t
C. can

答案

举一反三

We must _____ the room every day. [ ]
A. clean
B. cleans
C. to clean
D. cleaning

题型：安徽省期末题难度：| 查看答案

—Is Mr. Hu in the reading room?
—No, he _____ be there. He has gone to Tianjin.

[ ]

A. mustn"t
B. needn"t
C. won"t
D. can"t

题型：同步题难度：| 查看答案

—Listen! Someone is singing in the next room. Who _______ it be? Is it Wei Fang?
—No. It _______ be her. She is at school now.

[ ]

A. will; may not
B. must; mustn"t
C. may; can"t
D. may; won"t

题型：同步题难度：| 查看答案

—Finish drawing a house in ten minutes. OK?
—Sorry. It _____ in such a short time.

[ ]

A. may do
B. can"t be done
C. must do
D. needn"t be done

题型：同步题难度：| 查看答案

The backpack _____ Jenny"s. There is her name on it. [ ]

A. might be
B. could be
C. can"t be
D. must be

题型：山东省同步题难度：| 查看答案