Напишите следующие предложения в вопросительной и отрицательной формах: 1. he knows french perfectly. 2. i understand everything he says. 3. they stayed in moscow all summer. 4. she planned her work well. 5. they will return in october. 6. these exercises will be easy for you. 7. the door of the office was open. 8. the wind last night was very strong. 9. we were pleased to receive your letter. 10. the door of the office was open.

He doesn't know French at all.
I don't understand anything he says.
They didn't stay in Moscow all the summer.
She didn't plan her work well.
They won't return in October.
These exercises won't be easy for you.
The door of the office wasn't open.
The wind last night wasn't very strong.
We weren't pleased to receive your letter.
The door of the office wasn't open.