Is Mr. Green in the office?—No, he ________ be in the office. Look, the light in the office is off.

________ some of the orange juice and perhaps you will like it.

Your bedroom is so dirty. Would you please ________,Peter?—OK, mum. I’ll do it right away.

I usually go to school_______ seven_______ the morning.[ ]

Jack likes playing ______ chess, but he doesn’t like playing_______piano.