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1. It's important for us __________(learn) English.
2. Can you go __________(shop) with me this weekend?
3. Mary's uncle __________(take)  her to Hong Kong three months ago.
4. Beijing and Xi'an are the names of two big __________(city) in China.
5. December is the __________(twelve) month of a year.
6. The baby __________(stop) crying and listened to music.
7. He works very hard __________(improve) his English.
8. Her mother is often __________(worry) about her.
9. He __________(be) 14 years old next week.
10. I often hear the girl __________(sing) beautiful songs at home.

A. voice
B. noise
C. sound
D. throat

A. cry  
B. to cry  
C. cryed  
D. crying

[     ]

A. sang
B. sung
C. sing
D. to sing