—Listen! Someone is singing in the next room. Who ____ it be? Is it Li Wei?—No, it ______ be her. She is at school now.
-______ you leave so soon? -Yes. I have to catch my plane.
I was late for school because my alarm clock didn’t ______this morning.
- How was the performance last night? - It was so good. Though it ______ nearly four hours, few people left early.
- Is there any ______ for two chairs in the office? - Yes, I think so.
- Why are you so ______, Helen? - I thought I had lost my purse, but I didn’t. I found it in my study! A. angry B. happy C. sad D nervous