It was no use pretending that she had not seen him.It wasn't worth__
It's + adj. (for sb.) to do sth.
=(对某人来说,)做某事是……的。
比如:
It's dangerous to swim in this river. 在这条河里游泳很危险
It's not easy for me to resolve this problem. 对我来说,解决这个问题并不容易。
相比之下,worth是一个比较特别的形容词,它构成的句型是:
It's worth doing sth. /Sth. is worth doing.
=做某事是值得的/有价值的
比如:
It is worth visiting this palace a second time.
=This palace is worth visiting a second time.
这座宫殿很值得再来一次。