2 Choose the correct words. 1 You must don't have to wash your hands to kill germs. 2 Spiders can/can't fly. 3 They can/mustn't catch flies. 4 Snakes are carnivorous - they have to / mustn't eat meat. 5 They eat mice alive - they have to / don't have to kill them first! 6 You have to / mustn't drink this water - it isn't clean.
1.must
2. can't.
3.can
4.have to
5. don't
6.must not