Ii. раскройте скобки, употребляя глагол в past continuous. a. what was happening (happen) at the time of the robbery? b. well, i (sit) in my office. i (talk) to an employee. mary (put) food onto the shelves. several customers (do) the shopping and a cashier (stand) behind the till. a. can you tell me anything about the robbers? b. yes. they (wear) black masks and they (hold) guns. they (shout). a. how did they get away? b. they drove off in a car which (wait) outside.
В Past Continuous просто надо каждый глагол писать в форме was + окончание ing (если имя существительное в единственном числе) или were + ing (если в множественном).
В документе всё написано.