Ответ:

1. I must say that I phoned you at half past ten. 2. My friend knows that they sold equipment last week. 3. Some of our engineers say that they have done business this month. 4. We\’d like to tell you that we have already bought goods. 5. I know that you will like the film. 6. He says that he often receives letters. 7. I hope they spent a holiday in the Crimea last summer. 8. I believe they discussed the contract yesterday morning.