1. It's interesting to observe animals.
2. It's important to feed your pets.
3. It's difficult to catch a butterfly.
4. It's dangerous to wear red in front of bulls.
5. It's boring to watch how sloth moves.
6. It's pleasant to observe flocks of birds flying around.
7. It's useful to train your dog any common commands.
8. It's easy to get bitten by a crazy dog.
9. It's attractive having a butterfly on your head.
10. It's fun making a dog lick you.
Задание 2
1. is doing
2. saw
3.bought
4. have done
5. visit
6.will
7. are playing
8.will play
9.has done
10.helps
Had we been playing for two hours yesterday when Tom arrived? Yesterday we hadn't been playing for two hours when Tom arrived.
Had I been waiting for Bob for two hours when it was 3:00 pm? I hadn't been waiting for Bob for two hours when it was 3:00 pm.