He found out the truth and was surprised.

He is really knowledgeable and always teaches us new information.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

He was troubled by receiving prank calls.

He was troubled by receiving a prank call.

Last night, I received a prank call on my mobile phone.

His notebook was full of scribbles.

His notebook was full of scribbles.

He lost everything.

She is planning a date with her current boyfriend.