Complete the sentences using the correct modal verbs

1 You ......... raise your hand and wait before you ask a question.
2 Steven wants to go out with his friends but his mum said he ........ go until he has finished his homework.
3 In Britain, all teens ......... stay in school until they are sixteen years of age.
4 In the old days, teachers ......... hit students with a ruler if they misbehaved in class.
5 You ........... do this homework assignment, but those who do will get extra credit.
6 You ......... ask your teacher if you require extra help with your studies.
7 In certain schools, students ......... stand when their teacher enters the room.
8 You .......... spend more time studying if you want to get good marks.