Put the verb in the correct form. Use Past simple or Past Progressive. 1. When I (to look) at them, they (to smile) at me. 2. Laura (not to see) Mike last week. 3. When she (to open) the door, her friends (to sit) around the table. 4. What (to do) at six o'clock yesterday? 5. When Tim (to begin) doing his homework yesterday?