Can Should Must Present and Past

You _______ read the washing machine instructions carefully or you will ruin your clothes.

• CAN

• MUST

• MAY

Rock climbing _____ be dangerous

• SHOULD

• CAN

• MUSTN'T

Kate ....... swim very well, she is a great swimmer.

• should

• can

• mustn't

• can't

She ...... play the piano. She is a musician.

• cannot

• can

• mustn't

• can't

The doctor told him that he _ eat less. He’s too fat. (advise)

• should

• shouldn't

• mustn't

• can

You __ swim here. It's forbidden.

• must

• mustn't

• don't have to

You ......... spend too much time playing computer games. It's bad for your eyes. (advise)

• should

• shouldn't

• must

• can

....... you help me? This exercise is really hard.

• should
• can
• must
• mustn't

You ..... smoke here. It's forbidden.

• MUST

• MUSTN'T

• CAN

• WILL

He..............come to school today! He is feeling better! (possibility)

• might

• may

• must

• mustn't