Modal verbs

VI. Modal verbs. 

1. We should clean our teeth twice a day. 

1. You must pay the bill at once. 

1. You have to give the book back. 

1. We must wash this kind of cloth in warm water only. 

1. You should do your homework. 

1. Someone might find a solution to the problem soon. 

1. Someone should tell him never to do it again. 

1. we can keep our fields in good condition. 

1. She can solve the problem in just 2 minutes . 

1. The secretary may  take the note to the manager