Вставьте окончания в предложении не так ли? ) 1) you should help your 2) pupils shoud not think that russian is more important than maths, 3) you must sdo your homework every 4) puplis should be 5) english words can not be easily 6) teachers should be

1 You should help your classmates, shouldn't you?
2 Pupils should not think that Russian is more polite than maths, should they?
3 You must do your homework every day, mustn't you?
4 Pupils should be polite, shouldn't they?
5 English words can not be easily learnt, can they?
6 Teachers should be strict, shouldn't they?