Choose the correct answer. 1 You …B… do your homework before you watch TV. A can't B should C shall 2 … I come in? It's rather cold out here. A Should B May C Must 3 You … water the plants this weekend; the look dry. A are able to B needn't C ought to 4 … you collect the children from school, please A Must B Will C May 5 … you play the piano? A Can B Must C Should 6 I … buy some milk. There isn't any left. A mustn't B may C must 7 When … I call you? A shall B must C needn't 8 I … swim before I was able to walk. A might B could C can 9 You … walk to work. I'll give you a lift. A must B needn't C may 10 Tim … be out. There are no lights on. A shall B should C must