The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
He _____ if he works hard for the people.
—_____ he start at once or wait for a while?—Let him start at once.
A left-luggage office is a place where bags ______ be left for a short time, especially at a railway station.
—Guess what! I have got A for my term paper.—Great! You ______ read widely and put a lot of work into it.
How I wish every family ______ a large house with a beautiful garden!