_________ you can succeed in the end will mainly depend on ______ you do and ________ you do it.

[    ] 　　

A. What; what; now    B. Whether; what; how 　　

C. Whether; how; why  D. That; whether; how

President Obama plans to adopt a new approach in the Middle East, ________ is not to simply tell people ________to do, but rather to listen to their ideas.

　 A. that; which　　　 B. what; how　　　 C. which; what　　　 D. where; what

______ some teenagers don’t realize is _______ difficult life can be after they get addicted to drugs.

A. What,what a　 B. What, how　 　　 C. That,how　 D. That,what

从所给的四个选项中选择最佳答案

______ they are most interested in is ______ they can produce more and better cars．　　　

[　　]

A．That; how　　　B．What; how　　　C．What; what　　　D．That; that