4. Измените залог сказуемых, сделав все необходимые трансформации. Например, Active voice: Our students had learnt this poem by Monday. Passive voice: this poem had been learnt by our students by Monday. 1. His friend tells him everything. 2. The contract had been signed by 6 o'clock yesterday. 3. The waitress brought in the coffee. 4. His friend is showing me an interesting magazine. 5. The program was worked out by a well-known scientist.

Конечно! Вот преобразования залога для предложенных предложений:

1. Active voice: His friend tells him everything.
   Passive voice: Everything is told to him by his friend.

2. Active voice: The contract had been signed by 6 o'clock yesterday.
   Passive voice: By 6 o'clock yesterday, the contract had been signed.

3. Active voice: The waitress brought in the coffee.
   Passive voice: The coffee was brought in by the waitress.

4. Active voice: His friend is showing me an interesting magazine.
   Passive voice: An interesting magazine is being shown to me by his friend.

5. Active voice: The program was worked out by a well-known scientist.
   Passive voice: A well-known scientist had worked out the program.

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