Поставьте глагол to be или to have в нужной форме . 1) a lot of things we to do . 2) he a big coins collection . there many rare exemplars in this collection. 3) this his new flat , it 4 rooms. 4) there nothing we should worry about ! he a professional and he all necessary equipment to finish that job. 5) you wrong ! she no problem . i don't even understand what you thinking at .

There are a lot of things we have to do
He has a big coins collection.
There are many rare exemplars in this collection.
This is his new flat, it has 4 rooms.
There is nothing we should worry about!
He is a professional and he has all necessary equipment to finish that job.
You are wrong!
She has no problem.
I don't even understand what are you thinking at.