词语辨析
用mustn't和don't/doesn't have to填空
I don't want anyone to know it. You________tell anyone.
I can stay in bed tomorrow morning because I________go to work.
Whatever you do, you________touch the switch. It's very dangerous.
There is a lift in the building, so we________climb the stairs.
You________forget what I told you. It's very important.
You________be a good player to enjoy a game of tennis.