Do you speak English or French in Canada? _________.But I prefer French.

The temperature now is much higher than______of 100 years ago because of more and more greenhouse gas.

—Who is the boy over there?—It’s ______ brother.

—What did you do yesterday?—My brother took two friends of ________ to play chess with us. But I don’t’ know _______ of them.

With       help, we finished our work on time.