. Tracy has gone abroad for further study. It ____ be her. The girl you saw yesterday is her sister.
We are all going to the games. Why don’t you come ________?
She______ his number in the phone book to make sure that she had got it right.
Nobody noticed the thief slip into the house because the lights happened to_______.
The Internet has brought _______ big changes in the way we work.
I don’t ______ rock’n’roll. It’s much too noisy for my taste.