Напишите следующие предложения в вопросительной и отрицательной формах:
2. He is looking for the book which he lost.
4. The sky is getting very dark,
5. They are laughing at what you said.

Is he looking for the book which the lost He is not looking for the book which the lost The sky is not getting very dark Is the sky getting very dark They are not laughing at what you said Are they laughing at what you said

2He isn't looking for the book which he lost.
What is he looking for?
4The sky isn't getting very dark.
Is the sky getting very dark?
5They aren't laughing at what you said.
What are they laughing at?