4. Choose the correct word.
1 ....... I go outside, please?
A Can B Need C Must
2 You ........ leave your car outside the campus. There is a parking place.
A needn't B mustn't C have to
3 The rules say we ........ keep our rooms tidy.
A must B can C can't
4 I'm afraid you ........ go out now. It's too late.
A can B can't C needn't
5 You ........ put posters on the wall. It's forbidden.
A needn't B mustn't C have to