Вставьте правильные формы 1)bosphorus bridge connected\has connected east and west since 1973. 2)thounds of animals lived\has lived in the valley by the time. 3)they built\had built a huge bridge before we came to the village. 4)when the man returned home his son has gone\had gone to bed. 5) the flat was very dirty,because nobody has cleaned\had cleaned in for a long time.
