F Complete the rules with must or must not.

Решение:

Чтобы дополнить правила, нужно вставить слова must (должен) или must not (не должен) в зависимости от смысла предложения.

1. When you visit the zoo, there are rules that you must follow. First, you e.g. must keep away from the cages and you must not give food to the animals. You must not take any toys with you, for example remote control cars, skateboards, or bikes, because they can scare the animals. You must take your rubbish in the bins. You must not take your pets to the zoo. It's not safe for them. And finally, you must keep the area clean and you must wake up the animals if they're asleep. They need their rest too!

Ответ: 1. must, 2. must not, 3. must not, 4. must, 5. must not, 6. must, 7. must, 8. must.