Task 3:

1. A: "There's someone at the door."
   B: "I'll get it."

2. Joan thinks the Conservatives will win the next election.

3. A: "I'm going to move my house tomorrow."
   B: "I will come and help you."

4. If she passes the exam, she will be very happy.

5. I will be there at four o'clock, I promise.

6. A: "I'm cold."
   B: "I will turn on the fire."

7. A: "She's late,"
   B: "Don't worry, she will come."

8. The meeting will take place at 6 p.m.

9. If you eat all of that cake, you will feel sick.

10. They will be at home at 10 o'clock.

Task 4:

1. I'm afraid I won't be able to come tomorrow.

2. Because of the train strike, the meeting won't take place at 9 o'clock.

3. A: "Go and tidy your room."
   B: "I won't do it!"

4. If it rains, we won't go to the beach.

5. In my opinion, she won't pass the exam.

6. A: "I'm driving to the party, would you like a lift?"
   B: "Okay, I won't take the bus, I'll come with you."

7. He won't buy the car, if he can't afford it.

8. I've tried everything, but he won't eat.

9. According to the weather forecast, it won't snow tomorrow.

10. A: "I'm really hungry."
    B: "In that case we won't wait for John."