Помогите сделать из актива в пассив

... a doctor when I grow up. 3. My sister ... not ... at home tomorrow. 4. She ... at school tomorrow . 5. ... you ... at home tomorrow. 6. ... your father at work yesterday? 7. My sister ... ill last week. 8. She ... not ill three weeks ago. 9. Yesterday we ... at the theatre. 10. Where ...your mother in two hours? -She ...at the park. 11. Where ... you yesterday?-I ... at the cinema. 12. When I come home tomorrow, all my family ...st home. 13. ... you ... at the Institute tomorrow? -Yes I ... . 14. When my granny ... young, she ... at actress. 15. My friend ...in Moscow now. 16. He ... in St. Petersburg tomorrow.

1. to be an industrialist but to remain an idealist
2. to be cheerful in company but to be sad in private
3. to love all mankind but not to have a wife or a family to love him
4. to be patriot of his native country but to die alone in a foreign land
5. to invent dynamite to improve peaceful industries but to see it used as a weapon to kill people
6. to be world-famous for his works but to be never personally well-known, to avoid publicity
7. to be a Swede but to live for more than 20 years in Russia
8. never to study at school or University but to be a skilful chemist and an excellent linguist
9. to be a man of imagination but to show great business and financial sense

Я сделал как мог, получилось следущее:

He was an industrialist but managed to remain an idealist.
He was cheerful in company but he was sad in private.
He was a lover of all mankind but he never had a wife or family to love him.
He was a patriotic son of his native land but he died alone in the foreign country.
He invented a new explosive dynamite, to improve the peaceful industries, but saw it used as a weapon to kill people.
He was world–famous for his works but he was never personally well-known: while he lived - avoided publicity.
He was a swede but lived for more than 20 years in Russia.
He had never been to school or University but was a skilful chemist and excellent linguist.
He was a man the imaginative, but he had better luck in business and showed more financial sense.

Мне сказали чепухи напорол. Помогите пожалуйста, и ещё вопрос, если у меня каждое предложение начинается с He was это как и в русском языке является ошибкой?