a) Look at those clouds. I think it can/might must rain. This is impossible! It can't be/ mustn't be/may not be the answer. Well done! You may be/must be/might be very pleased! I've no idea where Jane is. She could be/must be anywhere! en I suppose it's possible. I might/can/must come to your party. I'm not sure. I must not/may not be able to get there in time. 3) That can't be/mustn't be/may not be David. He hasn't got a bike h) Lisa isn't here yet. She can be/must be on her way. 1) There's someone at the door. It can be/could be the postman. 1) Sorry, I can't come/may not out. I have to do my homework.
