Question

---Your classroom report is so wonderful.
---I wrote for 3 hours ___________ I finished it

1. A.
   when
2. B.
   if
3. C.
   before
4. D.
   after

Answer 1

C
考查從句的連接詞�！澳愕恼n堂報告很精彩�！薄拔一�3小時完成它的�！盇“當”；B“如果”；C“在......之前”；D“在......之后”。故選C。