The old man ____know ____get to the hospital.A. wants to, how to B.want to , what to C. want and, when to
—What’s your favorite ________? —Summer. Because I can swim in rivers.
David usually takes _______ walk for an hour after dinner.
The population of the world still now.
— Excuse me. Is the library open all day? —. Only from 8 a.m. to 4 p.m..
Keep off the drugs(毒品), you and your family will be in great danger?