He was actually a spy.

He lost everything.

She is planning a date with her current boyfriend.

My boyfriend gave me a gift.

Everyone was surprised by the news.

Kaku is my best friend.

He is proficient in calculating quadrature in astronomy.

He is struggling to understand the ablative case in Latin.

The sum of one angle of this triangle and its complementary angle is 90 degrees.

I have confirmed your reservation.