—Was ______ Bill, ______ played basketball very well, ______ helped the blind man cross the road?—Yes, of course. He is always ready to help others.
I’d rather have a room of my own, however small it is, than ___ a room with others.
Some researchers believed that there is no doubta cure for AIDS will be found.
You’d better _____ some money for special use.
Many studentspreparing for the midterm examination.
________ from space, the earth , with water_______ seventy percent of the surface , looks like a blue ball.