This afternoon Mr Smith will give us a report on nuclear energy which is well worth .A.

问题补充：

This afternoon Mr Smith will give us a report on nuclear energy , which is well worth .

A. listening

B. listening to

C. being listened

D. being listened to

答案：

A. listening

(答案→)B. listening to

C. being listened

D. being listened to

解析：本题考查worth用法。be worth doing值得做，主动表示被动，listen为不及物动词，故加介词to，选B。