Ответ:

Краткое пояснение: Выбираем подходящую форму будущего времени (Future Simple или be going to) и вставляем глагол в предложение.
  1. A: There's someone ringing the doorbell.
    B: OK, I will answer it.
  2. A: Will you walk my dog for a walk while I'm away tomorrow, please?
    B: Of course. I will walk with him in the park.
  3. A: We are going to travel around Africa this summer.
    B: I'm sure you will have a great summer.
  4. A: Look! There are a lot of dark clouds in the sky. It is going to rain.
    B: Let's stay at home.
  5. A: Will you write us a letter from Australia, please?
    B: I promise I will write you postcards from interesting places.
  6. A: The dishwasher isn't working.
    B: I know. I will call the repairman later.
  7. A: We are going to visit water-skiing.
    B: How wonderful! I will help you.