New ideas sometimes have to wait for years before _____.
---- Is it good to look up every new word when I come across it in reading? ---- No. You ________, because you are likely to guess the meaning from the context.
— Why, David, you look so tired! — Well, I ________an article and I must finish it tomorrow.
—Will you take the blue shirt or the yellow one? —is the right size for me, I’m afraid.
He wrotesong, which turned out to be rather popular withyoung.
-----What upsets him? -----_____ his computer is out of order.