Fill in must(not),(don't) have to, should. 1.Schoolchildren .... wear a clean uniform at school. 1.He ...do his homework before he watches a new film. 3.I.... go to school, today in Sunday. 4.We .... take our umbrellas, it's raining now.

Here are the sentences with the appropriate words filled in:

   Schoolchildren must wear a clean uniform at school.

   He should do his homework before he watches a new film.

   I don't have to go to school today; it's Sunday.

   We should take our umbrellas; it's raining now.