6. Complete the sentences with the correct verb in the Past Simple Tense.
study
visit
finish
answer
not come
listen
ask
wait
invite
2) We
3) My uncle
1) I invited them to my party last week.
hard for the exam, so we
all the questions.
us last week.
4) Murad
me to help him with the homework.
5) Yesterday I
to music with my friends.
6) I
for the school bus for more than half an hour, but it
7) I
doing my homework about an hour ago.

The steam was invented for James Watt, who worked is many years before he could make the instruments by which he perfekted his machine at first he worked in primitive tools so he could not make his engin well-regulated.
the old machine was kept going for a boy who stood by it and let in the air with means of which the steam was coldensed at every revolytion in this machine, tho ugh it was imperfect, some work was done and it had been used for a large mine-owner (шахтовладелец) to pump out the water. The first efficient steam-engine was madefor a Birmingham firm and it was soon used nearly every monufacturer. The revolution in industru made in this machine was extremely great.

1.Где знаменитый Greenpeace? (He has many offices around the world) он имеет множество офисов по всему миру
3.Что особенного в Байкале? (It is the largest reservoir of fresh water) это самый большой водоём пресной воды.
5.Что вызывает загрязнение озера Байкал? (near Lake Baikal are several industries that chemicals splashes on Baikal) рядом с байкалом расположено несколько производств, которые выплёскивают химикаты на байкал
6(it can be found on the official website of Greenpeace ) ее можно найти на официальном сайте Greenpeace.

чем смогла, но информация добыта с интернета, переведено с переводчиком, поэтому вам стоит немного подредактировать мои ответы