4 Correct the sentences. 1 When was the last time you complaint forsomething?When was the last time you complainedabout something?2 You shouldnt have complainted!3 I dont know what youre complaining with.4 They complaint for the homework.​

1) I have just been   told  by the secretary that documents for my business trip is being prepared   now, but they won’t  be ready  until the manager looks through   them. 
2) A new exhibition centre   has been built   in our city lately and the number of people taking part in fairs and exhibitions there are increasing  from day to day. 
3) The cars produced at this plant are exported   to different countries. 
4) As it was noisy in the room I couldn't understand what was discussed  Later I found out that recent political events had been spoken about.
5) I wondered why all the offers  were not accepted.The prices seemed quite reasonable because the company had modified  the model before

1. We are always glad to see them. 2. When are they free? — They are free in
the evenings. 3. They are so happy! 4. When are they at home? — They are at
home in the morning. 5. Who is ill? —
Our mothers are. 6. Are you hungry? — No, we aren't. 7. Are your sisters at school? — No, they aren’t.
They aren’t at school. 8. Who is away? — The Petrovs are away. 9. Are we right? —Yes, you are. 10. How are you? — We are quite well, thank you. 11. Are
you tired? — Yes, we are. 12. There are women in the room. 13. Who is
absent? — Ivanov and Petrov are. 14.We are thirsty. 15. They are wrong.