Перепиши предложения в пассивном залоге. Обрати внимание на употребление модальных глаголов в пассивных конструкциях.

1. Someone must warn them about the danger.
They _____ about the danger.

2. People must protect wildlife.
Wildlife _________

3. Mary must bring the letters today.
The letters ______by Mary today.

4. We have to fix the roof as soon as possible.
The roof _______ as soon as possible.

1. They must be warned about the danger.

2. Wildlife must be protected.

3. The letters must be brough by Mary today.

4. The roof has to be fixed as soon as possible.