问题补充:
Many teenagers the old and they often offer their seats to the old on buses.
A. agree with
B. worry about
C. laugh at
D. care for
答案:
A. agree with
B. worry about
C. laugh at
(答案→)D. care for
解析:句意:许多年轻人关心老人,并且经常给他们在公交车上让座。agree with sb意为“同意某人的观点”;worry about意为“担心,担忧”;laugh at sb意为“嘲笑某人”;故选D。