Поставьте слова в нужном порядке 1) in we the classroom we 2) mary new a has pencil got 3) old children how are your? 4) friend are my engineers

We were in the classroom
Mary has got a new pencil
How old are children?
My friends are engineers.

1) We are in the classroom.    2) Mary has got a new pencil.
3)How old are your children?
4) Engineers are my friend(s).  (в задании ошибки инженеры множ. число а друг ед. число так не должно быть) в 1 предложении вообще нет глагола.