Воткните правильный модальный глагол (should, neednt, must, mustnt, have, dont have

Воткните верный модальный глагол (should, neednt, must, mustnt, have, dont have to).
1) The desks ___ be left clean before going home.

2) The workbooks ___ be brought to the class if there is no homework.

3) We all think that you ___ not wear that dress. It doesnt suit you.

4) All children ___ fasten their seatbelts when travelling by car.

5) You have been coughing for 2 days. I think you ___ see your doctor.

6) Students ___ to pay for the transportation because it is free.

7) If a student breaks a school rule, she/he ___ to stay at school after the classes.

8) All people ___ try to keep a healthy diet.

9) You ___ хэнд in your assignment before the deadline.

10) You___be very rich to go skiing nowadays