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
Believe it or not，I'm sure that is ________ people call the six sense.
A．when B．what C．which D．why
Meals in Spain are quite different from ________ they have in China.
A．which B．what C．that D．whom
________ seems to be a strong competition in China for senior high students to enter universities does exist in other countries as well.
A．It B．Which C．What D．That
