Underline the correct word. e.g. It is/are raining today. 21 They is/are having a birthday party in the garden. 22 She is/are washing the car, isn't she?

21. They are having a birthday party in the garden. (Они устраивают вечеринку по случаю дня рождения в саду.)

22. She is washing the car, isn't she? (Она моет машину, не так ли?)