The world is getting smaller and smaller because the Internet gets us       .

If there are ____trees, the air in our city will be ____cleaner.

Mr. Brown is one of ______ teachers in the school. All the students like him.

--- “ The T-shirt is too big for me, would you mind giving me a ___ one ?”---“Ok, here you are.”

—Which month has ______ days in a year?  —February.