Units 7-9: Exercise 5

Choose the correct answer.

1. People ... have to should drive on the left in the UK.
2. You ... mustn't don't have to shout in the library.
3. You ... should must take an umbrella if it's going to rain.
4. We ... oughtn't to don't have to finish the exercise for homework.
5. If Lewis has a headache he ... should has to drink some water.
6. You ... should ought to tell all your friends the news.