Решение:
- They are not playing tennis because it's raining.
- A: What are you going to do at the weekend? B: I'm going to visit my grandmother.
- I am going to work in my mum's shop in the summer holidays.
- A: Are they going to help them with their homework? B: Yes, she is.
- He is not going to go out with his friends this evening.
Ответ: are not playing; are you going to do; am going to work; Are they going to help; is not going to go out.