E8_ Modal verbs

Choose the best answer to complete the sentence.

We ............. phone Lisa. It's her bithday to day.

• needn't

• should

• might

• ought

The book is optional. My professor said we could read it if we needed extra credit. But we _____________ read it if we don't want to.

• must not
• can not
• don't have to
• does not have to

Susan ____________ hear the speaker because the crowd was cheering so loudly.

• couldn't
• might not
• can't
• isn't

Kate: _____________ hold your breath for more than a minute?
Jack: No, I can't.

• Might you
• Can you
• Are you able to
• Should you

You _______________ be rich to be a success. Some of the most successful people I know haven't got a penny to their name.

• can't
• don't have to
• shouldn't
• must

You __________ be kidding! That can't be true.

• ought to
• has to
• should
• must

You ____________ take along some cash. The restaurant may not accept credit cards.

• had better
• can
• has to
• will

You _____________ forget to pay the rent tomorrow. The landlord is very strict about paying on time.

• couldn't
• mustn't
• don't have to
• might

When he was young, he ________ swim very well. He won medals and championships!

• had to
• can
• could
• might

It's wet and windy outside today. You ________ go out without an umbrella.

• shouldn't
• won't
• don't have to
• can