问题补充：
---Why did you refuse to join them in the show?
---Because I don’t think the show is worth part in.
A. take
B. to taking
C. taking
D. to take
答案：
A. take
B. to taking
(答案→)C. taking
D. to take
解析：句意：-你为什么拒绝参加他们的表演？-因为我认为这个表演不值得参加。be worth doing sth. 值得做某事，是一个固定句型。故选C。
