Not everybody knows exercising too much can_________ serious pain and even injuries.
—What do you think about the new teacher?—________ the new teacher is an elegant lady, she can be extremely difficult to work with.
Nowadays, many people walk to work ________ Copenhagen Conference calling for living a low-carbon lifestyle to deal with global warming.
—I didn’t take notes at yesterday’s meeting because I had left my pen at home.—You ________ mine. I ______ it.
We’ve been told the good news, but when and where to go for the exciting paid vacation _______ yet.
The police at Denver International Airport examined a bomb threat against a United Airlines flight to San Francisco,____________ the flight for hours.