—Listen! Someone is singing in the next room. Who ____ it be? Is it Li Wei?—No, it ______ be her. She is at school now.
- Do you have any______? -Yes, I like chess and drama best.
- I'm sorry I made a mistake! -______. Nobody is perfect.
If you ______ smoke, please go outside.
Jim was watching a late night film______ the television went blank.
- Your e-mail address again? I ______ quite catch it. - It's Lily@126.com.