這題考worth 的用法
worth,worthy,worth-while都為adj.意為"值得".
1.worth：be worth + n.當(dāng)名詞為金錢時(shí),表示"…… 值得……"
be worth doing sth."……某事值得被做"
The question is not worth discussing again and again.
2.worthy：be worthy of +n.當(dāng)名詞為抽象名詞時(shí)表示"……值得……"
be worthy to be done "某事值得被做"
The question is not worthy to be discussed againand again.
3.worth-while：be worth-while to do sth "值得做某事"
worth while：It is worth while doing sth
It is worth while sb to do sth.
綜上正確的用法只有B