二、单项选择（共15题，每题一分，计15分）
从A、B、C、D四个选项中选出一个可以填入句中空白处的最佳答案。
( )21.The story happened _____ the evening _____ April the fourth.
A. in, of B. on, on C. on, of D. in, in
( )22. —Happy New Year! —_______________.
A. The same to you. B. All right. C. I’m happy. D. Thank you.
( )23. Look at the _____ __rain. It rained even more ____ ___than last night.
A. heavy; heavy B. heavy; heavily C. heavily; heavy D. heavily; heavily
( )24.It took my mother two hours ________ the house.
A. cleaning B. to clean C. cleans D. clean
