1. Mr. Simoncleaned 14 of the 34 buses. How many are still to be cleaned?   2. It is possible to accommodate 70 cars in a parking lot. If 33 cars are already parked, how many more cars can fit?   3. A milk van started with 639 bottles of milk. It delivered 69 bottles. How many bottles are still to be delivered?   4. Robert has to repair 33 cabs. He has repaired 19. How many more does he have to repair?   5. There are 231 passengers in a train. If51 people get off at the station, how many passengers are still there in the train?