This is the very dictionary____which Mr. Smith came here the other day.

ys, many people walk to work ________Copenhagen Conference calling for living a low-carbon lifestyle to deal withglobal warming.

Seeing their son playing computer games all day, theparents don’t know ______ it.

Who is the woman in black— ________ is our physicsteacher.

__ at the cafeteria before, Tina didn’t want to eat there again.