问题补充:
I think this piece of music is worth.
A. listening
B. to be listened to
C. listen to
D. listening to
答案:
A. listening
B. to be listened to
C. listen to
(答案→)D. listening to
解析:根据语境可知此题考查固定句型结构be worth doing sth表示值得做某事,此句的含义是我认为这首曲子值得一听,又因listen是不及物动词,其后跟宾语是一定要加介词to。故选D。