一、单选题（共 50 道试题，共 100 分。）
1. I have spent all my pocket money on _________ books this year.
A. worthwhile
B. worth
C. worthy
D. worthless
正确答案：A
2. Before ____ a promotion, Sam had presented a report on how the school should be run better.
A. get
B. getting
C. having got
D. he getting
正确答案：B
3. Where ___ she come from
A. do
B. does
C. am