Mike is a good boy. He often _________ to help his classmates.

The man in 1983. He for over 30 years.

I didn’t hear you come in just now.— That’s good. We tried _____ any noise, for you were sleeping.

Math one of the subjects in middle schools.

We often go to ________ school librarybecause we can have such easy access ________ the Internet there.