worried

Are you worried____ your son who is at home alone?

Are you worried____ your sister who has left home alone?

I was worried about my maths, but Mr. Brown gave me an A.          .

Are you worried____ your sister who has left home alone?

I was worried about my maths, but Mr. Brown gave me an A.          .

At first they worried about the situation but things _______ quite satisfactory.

--What do you suppose made the mother so worried?       --__________.

I was worried about my maths, but Mr. Brown gave me an A.          .