6. Прочитайте и переведите предложения. Поставьте модальные глаголы в Past Simple

6. Прочитайте и переведите предложения. Поставьте модальные глаголы в Past Simple или Future Simple Tense.
1. A buyer can maximize utility but he prefers to have less rather than more. (Past Simple)
2. We must know the effect of a price change on the whole output for making economic forecasts. (Future Simple)
3. The consumer has to solve the problem of choice. (Past Simple)
4. Not all partners in a firm must take an active part in management. (Past Simple)
5. Provided additional inputs are to be obtained, producers must have smaller risks of a fall of price. (Future Simple)