下列各组字母中全部是元音字母的是 ____。A. a, e, o, r B. a, i, u, e C. o, u, e, n
—Can I get you a cup of black coffee? —______.
—I prefer at home on such a rainy day. —So do I.
A low-carbon(低碳) lifestyle has an effect our daily life. People are paying more and more attention to energies these days.
These pictures will show you____.
—Don’t play with the knife, ______ you’ll cut your hand. —Sorry, I ______ .