Задание номер 2 . Найдите ошибки и исправьте их. ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!! (в 1 предложении я нашла)

Many people celebrate Christmas on the 7th of January.

It was so dark. He could see the houses hardly.

He wants to go to London. I think he will be happy there.

My mother has never been to London.

Who locked the door?

But I have washed the floor.

Will there be any sandwiches for us?

How long does it take you to do your homework?

There will be a new blackboard in our classroom next month.

We were at Moscow two years ago.