Modal verbs

Don't stand up in the boat! You _____ fall in the river!

• might

• must

• should

• ought to

Sue says she's stuck in traffic and she _____ be late.

• must

• should not

• might not

• might

You really _____ start spending more time on your work. It needs some improvement.

• should

• will

• shouldn't

This is a hospital. You __________ smoke here.

• need

• should

• must

• must not

The teacher said we ____________ read this book for our own pleasure as it is optional. But we do not have to if we don't want to.

• must

• ought to

• can

_________ you stand on your head for more than a minute? No, I _______

• must/ must not

• should/shouldn't

• can/can't

• may/may not

Take an umbrella. It __________ rain later, I guess

• must

• should

• might

• will

Drivers __________ stop when the traffic lights are red.

• must

• should

• will

• can

___________ I ask you a question, please? Yes, of course

• May

• should

• will

You ___________ leave small objects around as children can swallow them.

• can

• shouldn't

• will

• ought to