5примеров на modal should

Teachers should be strict. You should be funny There should be some fun in class,but pupils shouldn't be allowed to make noise and be lazy during lessons. You should see that film The teacher should be understading

1) I should complete my homework before I can go for a walk.
2) I should help my mum with the bags.
3) I am sorry, I can't join your party, I should prepare for tomorrow's exam.
4) I should go to the gym to improve my body.
5) I should learn the words to pass the exam successfully.