1. — I am applying for Zhejiang University.

— ________ .
A. All right       B. Congratulations    

C. Of course     D. Good luck 

2. ________ we stood at the top of the building, we were able to enjoy the town below clearly.

A. As            B. Although         

C. Unless        D. Until

3. He went hungrily from ________ door to ________ door, delivering newspapers.

A. the; the        B. 不填; 不填      

C. a; 不填       D. a; a