We have to ask them to ____talking in order that all people present could hear us clearly.
Information technology is taught in most schools,__________we have entered the information society.
Scientists say it may be five or six years __________it is possible to test this medicine on human patients.
Parents should take seriously their children’s requests for sunglasses __________.
—Shall we meet tonight? —Sorry,I’m busy.How about_________day?
—I have learned that a large new building will be set up__________the Twin Towers once stood. —So have I.But the American people haven’t yet got over the shock of September 11.