Ответ:
Задание 2.
1.You must finish the article as soon as possible.
2.My grandfather is retired, so he shouldn't go to work.
3.He needs more exercise, he can go to a gym.
4.Tom doesn't answer the phone, he must be in a tunnel now.
5.I will cook everything for the party, so you don't have to bring any food.
Задание 4.
1.Steven is very proud of his new bicycle.
2.Hello, can I speak to Ann, please?
3.Are you going to arrange a picnic at the weekend? - I would like to but it depends of the weather.
4.What are you looking for?
She always laughs at his silly jokes.