I made a promise to myself ________ this year，my first year in high school，would be different.(2012·浙江)
A．whether B．what C．that D．how
(2009·北京)At first he hated the new job but decided to give himself a few months to see ________ it got any better.
A．when B．how C．why D．if
(2011·重庆)It is still under discussion ________ the old bus station should be replaced with a modern hotel or not.
A．whether B．when C．which D．where
The limits of a person's intelligence，generally speaking，are fixed at birth，but ________ he reaches these limits will depend on his environment.(2011·安徽)
A．where B．whether C．that D．why
We've offered her the job，but I don't know ________ she'll accept it.(2011·山东)
A．where B．what C．whether D．which
It doesn't matter ________ you pay by cash or credit card in this store.(2012·山东 )
A．how B．whether C．what D．why
