1 (the office / clean) The office is being cleaned.. 2 (the shirts / iron)
The shirts have been ironed.
3 (the window / break) The window
4 (the roof / repair) The roof
5 (the car / damage)
6 (the houses / knock / down)
7 (the trees / cut / down)
8 (they / invite / to a party)

1.The greater part of Great Britain's industry is situated in the Black Country (the industrial area of Middle Anglia (England мб?)). present simple passive
Значительная часть промышленности Великобритании расположена в районе, называемом "Черная Страна" (промышленная область Средней Англии).
2.Many long and successful discussions have taken place within this week. present perfect active
На этой неделе несколько длительных и успешных переговоров
3.When i come home the family be (тут должно быть was вместо be, или is, судя по тому, что до этого глагол come в первой форме) wacthing TV. собсна либо present continuous active, либо past continuous active
Когда я приду домой, семья будет смотреть ТВ. или Когда я ПРИХОЖУ домой семья смотрит телевизор
4.The street  has been widened. present perfect passive
Улицу расширили

Last week i was on an excursion there. first we listened to a lecture on the history of our region which was very interesting. then a guide showed us the exposition of the museum. we walked through its halls looking at different stands with exhibits. there were ancient vases and coins, dishes and bowls, tools and arms. the guide told us about the origin and the age of the exhibits and answered our questions. the girls asked questions about national costumes and dishes and the boys were interested in arms.