问题补充:
The film on the book by Jack London is well worth.
A. basing; seeing
B. based; being seen
C. to be based; to see
D. based; seeing
答案:
A. basing; seeing
B. based; being seen
C. to be based; to see
(答案→)D. based; seeing
解析:第一个空,主语film与动词base之间是被动关系,故用过去分词作定语;第二个空,worth是形容词,“价值,值得……”,后接名词或动名词,故选D。