The book is worth buying .
It is not worthwhile for you to do so much for her .
It might not worthwhile that you love that girl .
It is not worth giving up your job for her .
How much do you think this dress is (this pair of shoes are) worth ?
I think that this dress is worth at least 500 yuan .
1.The book is not worth buying .
2.It is not worthwhile you to do so much for her
3.she isn't worthwhile you to love.
4.It isn't worthwhile to give up your job for her.
5.how much do you think this suit/this pair of shoes is worth?
6.I think this dress is worth at least 500 yuan