Как переделать данные предложения в косвенную речь, поставив глагол в главном предложении в прошедшем времени: 1. The teacher will give you further instructions. 2. The lecture will begin in five minutes. 3. Could i speak to Mr. Smith, please?

The teacher said he would give you further instructions
As they said the lecture would begin during five minutes
I asked if I could speak to Mr. Smith