Скажите что это не так употребите сокращённую фотик глаголов.

I'm not.. he won't be.. he can't he didn't go to school

1when i went to see the head of the "green party" in 1  when i went to see the head of the "green party" in  the hotel, he already gave an interview to journalists and rested. 2 when i arrived at his hotel, we got in touch with ourpartners by phone and appointed a meeting with them. 3 when he arrived your fax, we have not received specific response over the concentration of harmful substances in the air 4 the young scientist has done a huge preliminary work on problems of ecological imbalance before made a presentation at the conference. 5 by the end of the century most of the problems associated with the depletion of the ozone layer will be solved successfully. 6 when representatives of most countries will join the movement for the protection of the environment, they will take the necessary measures to protect our forests, rivers, lakes and the sea. 7   we learned that our partners have not made a final solutions for the problem of cooperation.ect our forests, rivers, lakes and the sea.