Question

Подставьте Have to, Must or Can
1) You____be quite during the lesson.
2) You____wear shoes when you play beach volleyball.
3) You____wear crash helmet if you drive a motorbike.
4) You____cross the road when the traffic light is red.

Answer 1

1) Yo must be quite during the lesson.
2) You can wear shoes when you play beach volleyball.
3)You have to wear crash helmet if you drive a motorbike.
4) You  must  cross the road when the traffic light is red

Answer 2

1-have 
2-have not to wear 
3-must
4 must not cross