温馨提示：请仔细审题，细心答题，相信你一定会有出色的表现！
一、单项选择（本题有15个小题，每小题1分，共计15分）
( ) 1. —Look! Here is a book about the history of Britain!
—Really? Please show me _______ book.
A. an B. a C. the D. 不填
( ) 2. —Is Christmas ______ December 25th or 26th ? —25th, I think.
A. on B. in C. at D. for
( ) 3.—Susan, can you help me clean the window?
—Why_______? Alice is sitting there doing nothing.
A. him B. her C. you D. me
( ) 4. I __________ eat too much chocolate because it’s unhealthy.
A. always B. often C. never D. sometimes
