Fill in: "have to" (or its negative form) in the Present

Fill in: quot;have toquot; (or its negative form) in the Present Simple or Past Simple.Fill in: quot;have toquot; (or its negative form) in the Present Simple or Past Simple. 1)We ... come to school on Saturdays and Sundays. 2)A teacher ... correct a lot of exercise-books. 3)We missed the bus, so we ... take a taxi. 4)She ... do any homework because wasn39;t at school.