________late, but also he forgot his books.
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.
—Didn’t you buy a dress yesterday?—No,__________I liked the colour,I didn’t like its style.