Верный вариант: have already checked in.
Это Present Perfect Simple. Из контекста становится понятно, что мы говорим о каком-то действии, совершённом в и имеющим результат в настоящем (это формулировка из правила). То есть мы уже зарегистрировались и теперь ждём посадки.
Кроме того, тут слово ‘already’ – оно автоматически указывает на Present Perfect Simple.
6. She asked me if I sometimes had headaches.
7. He wanted to know if something was wrong with me.
8. They asked me if I had a good appetite.
9. She asked me if I would follow her advice.
10. They wanted to know if I spent much time out-of-doors.
11. I was asked to buy bread, milk and sugar.
12. He asked me to wait for him at home.
13. She told me to clean the/my room.
14. They told us to come home straight after school.
15. I was asked to take the dog for a walk.
16. We were told not to ask him silly questions.
17. We were told not to make noise.
18. We were told not to run along the corridor.
19. We were told not to waste time at the lesson.
20. I was told not to lie on my/the desk.
My family is large. There are 6 of us: father, mother, my sister, two brothers and me. My family is friendly and loving.
My father’s name is …. He is clever and kind. He is a doctor by profession.
My mother’s name is …. She is busy and loving. She doesn’t work. She is a housewife.
My elder sister’s name is … She is a very beautiful girl. Her hobby is singing.
My younger brother’s name is … He is very active. He likes sport.
My hobby is drawing. I like to draw in my free time. Also I like reading books. My favourite writer is …
At the weekends all the members of our family spend time together. We go for a walk, visit museums, go to the cinema or to the theatre.
I love my family very much.
надо вставить was already checked in
Объяснение:
вроде так