F. Complete the rules with must or mustn't. When you visit the zoo, there are rules that you must follow. First, you e.g. must keep away from cages and you 33) ... give food to the animals. You 34) ... take any toys with you, because they can scare the animals. You 35) ... take your pets to the zoo. It's not safe for them. And finally, you 36) ... keep the area clean and you 37) ... throw your rubbish in the bins. You 38) ... wake up the animals if they asleep. They need their rest too!