Привет! Давай разберем эти задания вместе.
"Mariam at the concert an hour ago?" Ответ: A) was
"I ... in Baku now, but I ... in London in 2011." Ответ: C) am, was
"We had a great time at the party. It ... funny." Ответ: A) was
"Where did you go last week?" Ответ: C) was
"Our teacher said that dinosaurs ... huge." Ответ: A) were
Если что-то еще непонятно, пиши! Мы обязательно разберёмся.