Cars ________ be parked in the street．

A．hasn't to

B．mustn't

C．can

D．must

He ________ listen to the teacher carefully in class．

A．has to

B．have to

C．must

D．must to

She ________ look after her mother because she is ill in bed．

A．has to

B．have to

C．must to

D．had to

________ you mail the letter for me?

A．Have

B．Do

C．Are

D．Could

________ your friends speak English, too?

A．Have to

B．Can

C．May

D．Must to

I'm tired．I ________ take a rest．

A．have to

B．may

C．can

D．must to

Loud noises ________ make people ill, hurt their ears, or even drive them mad．

A．must

B．need

C．can

D．should

I ________ take medicine as I was ill．

A．have to

B．need to

C．could

D．had to

We ________ go．

A．must

B．can to

C．must to

D．have

－Do we have to bring a uniform?

－Yes, ________．

A．they can

B．we can't

C．we do

D．we can