Modal verbs: ADVICE, OBLIGATION AND PROHIBITION

Choose the correct alternative. Sometimes both aleternatives are correct.

I _________ speak to the teacher. I think my exam result is wrong.

• have to

• must

• both

You _______pick me up from school tonight. I'm going to a friend's house.

• needn't

• don't have to

• both

We ________ pay– the exhibition is free.

• mustn't

• don't have to

• both

We're going to be really late. I think we __________ tell someone.

• should

• ought to

• both

You ______ at in the library. It isn't allowed.

• mustn´t

• don´t have to

• both

She ___ win this game to stay in the match.

• must

• needs to

• both

You ___ lie down if you aren't feeling well.

• should

• have to

• both

Companies that want to import these goods ____ get permission from the authorities.

• should

• have to

We _____ be too worried about exports in this country as our export sales have increased massively in the last two years.

• don´t have to

• needn´t

• both

With the demand for sugary snacks decreasing in our school, we _____ think about getting more healthy food in stock.

• ought to

• have to

• both