"Excuse me, sir. ____ you help me, please?"
"Certainly."
[     ]
A. Could
B. Do
C. Will
D. Are
用所给词的适当形式填空。
1. Maria _____ (can) speak when she was two years old.
2. — Look! Tom is having lunch.
    — Yes, he often _____ (have) lunch at half past twelve.
3. Do you enjoy _____ (play) basketball?
4. We should _____ (finish) the work on time.
5. The boy _____ (stay) up until the TV said goodbye.
6. ____ our sister _____ (have) any milk?
7. Why _____ (not tell) me about it early?
8. —_____ they _____ (go) home yesterday?
    — Yes, they did.
9. They each _____ (have) a CD in their bags.
10. It is a good time _____ (sing) now.
The last train is left, so you _____ stay here until tomorrow.

[     ]

A. must
B. have to
C. needn't
D. can not
—What are you doing the day after tomorrow?
—I _____ babysit my sister. My parents are not at home.
[     ]
A. can
B. have to
C. could
D. can't

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

[     ]
A. couldn't
B. can't
C. can
We must _____ the room every day.
[     ]
A. clean
B. cleans
C. to clean
D. cleaning
—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
—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
The backpack _____ Jenny's. There is her name on it.
[     ]

A. might be
B. could be
C. can't be
D. must be

—Look! It _____ be Mr Zhang.
—No, it _____ be Mr Zhang. He has gone to Paris.
[     ]
A. may, mustn't
B. must, may
C. must, can't
D. can, May not
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