1.you must go up/across/into the bridge to get to school

across-пересікти міст

ответ: 1-a) we  should not  burn  garbage.  it.            2- c) plants  growing  in the sea            3-c) greenpeace  protect  the oceans,  rivers, seas  and lakes            4-c)  we can  help the animals  if  we do not  cut wood            5-a)  we can help  the fish  if we do not  pollute the  oceans, rivers  and lakes

1)she wasn't invited to the party by them.

2)the windows were not left open by me.

  3) the light wasn't turnud off by them.

  4)some friends have been invited to tea by me.

  5) an english book has been given me by her.

  6)have the letter been written yet?

  7) we have been told a lot of interesting things by them.