3. complete the sentences with have to, has to, don't have to and doesn't have to. example: they have to do an exam. 2 jenny clean her desk .her mother asked her to do that.3 ken and learn more english vocabulary.4 andy help his mom. 5 we our homework.6 he a pencil at school. he can use a pen as well.7 we shopping. the fridge is full of food.8 my hamster. 9 in the evening if he doesn't want to.10 read the book for her literature class. 11the teacher a lot of homework.