1. Nick (to do) his homework by seven o'clock yesterday. 2. You (to help) your father tomorrow? 3. When Nick (to come) home yesterday, his mother (to return) and (to cook) dinner in the kitchen. 4. When I (to go) to school yest...

1. Nick (to do) his homework by seven o'clock yesterday. 2. You (to help) your father tomorrow? 3. When Nick (to come) home yesterday, his mother (to return) and (to cook) dinner in the kitchen. 4. When I (to go) to school yesterday, I sud¬denly (to remember) that I (to forget) to take my English exercise book. 5. Yesterday grandfather (to tell) us how he (to work) at the factory during the war. 6. When Mr. and Mrs. Smith (to arrive) home, they (to discover) that someone (to break) into their house. 7. The man (to get) off the bus without paying while the conductor (to collect) fares upstairs.