модальне дієслово Must

A doctor ____care about his patients.

All passengers ____ fasten their seat belts.

Spectators ___use mobile phones during the performance.

People ___ take care of nature

Children, why you are still watching TV? You ___go to bed!

You ____use computer for more than 4 hours straight.

All passagers ___pay for a ticket.

Soldiers __ follow orders.

They ___ make noises in the classroom.

You ____ park your car there without permission.