-Can I come to see you at ten o'clock, John?-I'm sorry, Jo, but I __________ my uncle then.
I’d like to work with ____ is honest and easy to get on with.
Mary wrote an article on __the team had failed to win the game.
Do you have any idea ___ is actually going on in the classroom?
If one of the computers _______, the whole networks would be unable to work.
Poor Richard spent his last penny on a bowl of noodles. Now he is______.