Раскройте скобки употребив past simple - past continuous 1. as he (get) into the bus it (start) suddenly and he (fall) backwards on to the road. 2. when i (hear) his knock i (go) to the door and (open) it, but i (not recognize) him at first because (he wear) the glasses.
2.when i hear his knock i go to the door and open it, but i not recognizes him at finish because he wears the glasses