―I wonder _______they are waiting.―At the bus stop.

Our school reading room ________ from 8a.m. to 5p.m. every day.

Many people agree that_______ knowledge of English is a must in ______international trade today.

A lot of trees________ around here every year, and we can enjoy fresher air now.

I found my sister ______ my things and took my new magazines. What should I do?– I guess you should tell her to say sorry.