перевод предложений. Номер 3b

1.It is useless to call him;at this time he never stays at home.
2.Occupation by tennis have brought her big benefit.
3.The dream is very useful in the open air.
4.It is hardly worth worrying about it.
5.To listen to his stories is once again to remember concerning events of those days.
6.Swimming-one of the most popular спорт.
7.It is dangerous to catch fish in this river.
8.We knew that with him it was useless to argue.
9.It isn't good to think of the friends so.
10.It gives pleasure to me to learn English.
11.Smoking hazardously to health.
12.To ask him about the help is only in vain to waste time.