How do you improve your listening, Mary? —Just ______ listening to tapes, it’s a good way, you know. [ ]

Nowadays young people have their personal look. They want to ____ their personality in this way.

Look at the girl! Is it Susan? —No, it __________ be her. She has gone back to her hometown.

Tell me your : Stay here or go with us ?

There is somebody knocking at the door. Who________ it be?—I’m not sure. It ________ be a postman.