You did not let me drive. If we ____in turn, you wouldn’t be so tired now.

---Mary knocked into a tree last night while driving, but she is all right.---She is lucky. She          herself badly.

 Something is wrong with the window; it _______ not open.

―Is that Miss Liu having dinner over there?―It     be her. She has gone to New York for an important business meeting.

(江苏省南通市2009期末调研)－Mary, how did your Math test go?－I had thought I _________, but in fact I came in the top 10% in my class.