Упражнение 2. Закончите предложения, преобразуя инфинитив в герундий. Начинайте предложения словами My friend is responsible

1) My friend is responsible for publishing of these papers in time; 2) My friend is responsible for providing of the information on subject; 3) My friend is responsible for testing the theory experimentally; 4) My friend is responsible for accounting for the peculiarities of the new system; 5) My friend is responsible for collecting materials on the problem; 6) My friend is responsible for considering the problem from this aspect; 7) My friend is responsible for studying the new observations thoroughly