25. Please stop smoking,_________ ? (A) will you (B) are you (C) have you (D) do you

第 31 至第 40 題，每題各有一個空格，並各附有四個選項，請依據文意與語法，選出最適當的答案，以完成該句或該短文。31._________ , the students placed their pencils on their desks and left the room. (A) Being finished the test (B) Heard the bell’s ringing (C) Having completed the test (D) Had written the answers