Housing prices _____much higher now if the government hadn’t taken measures to control house dealing.

Wealth is important but as a matter of fact , I think , _____ is health that counts.

The course normally attracts 20 students per year, ____ up to half will be from overseas.

—Where did you find our chemistry teacher?
—It was in the lab ______ he was doing his experiment.

I need to call my friend David ______ coat I walked off by mistake yesterday.

The girl         is singing an English song in the next room is Tom’s sister.

         is known to us all, he is an excellent student in our class.

This is the reason          he was late for class today.

He took medicine 3 times a day,________ didn't work.

So absorbed ________ in the research that she didn’t hear someone knocking at the door.