chia động từ ở thì QKĐ: 1: We (drive)..... around the parking lot for 20 mins to find a parking space. 2: When were (arrive) at the restaurant, the place (be) full. 3: The waitress (ask) us if we (have) reservations. 4: I (say), "No, my secretary forgets to make them." 5: The waitress (tell) us to come back in two hours.