If we go on using energy so wastefully, __________ are that our oil wells will be dried up before new energy sources can be found to replace oil.
What you said just now me of that American professor.
—— Have you made an apology him breaking his window? ——Yes, I have.
Jenny nearly missed the flight__doing too much shopping.
He sent me an e-mail, to get further information.
As teachers, we feel our duty to teach our children to be good wherever we are.