1. I looked everywhere for the book but I find

1. I looked everywhere for the book but I find it. A) couldnt B) mustnt C) shouldnt
2. You drive carefully on a busy road. A) canB) should C) may
3. I dont feel well today. I leave a bit earlier? A) mayB) mustC) should
4. Yesterday I stayed at home because I help my father. A) can B) must C) had to
5. You use my dictionary as long as you like.A) must B) may C) have to