Our teacher insisted that we spend more time on ___ reading

问题描述:

Our teacher insisted that we spend more time on ___ reading
请问worth,worthy,worthwhile填哪个?为什么?

我会选择worthwhile,这个可以做定语
The book is worth reading.
The book is worthy of reading.
The gook is worthwhile reading.
但上面例子中的句子只能用worthwhile