Find the mistake

It has taken them almost two months to answer to my letter.

I called her name but nobody answered me.

There is a beautiful antique house in the centre of the town.

If you have any questions,ask your teacher.

Has atsuko found any job yet?

If there in any hole in the ballon,the air will escape.

When he asked if he could use the telephone,he was told that the family didn't have any.