题目内容：

Many experts hold the view _______ teacher development is _______ the key to better education lies.
A.which; where B.which; in which C.that; where D.that; in which
为什么不选D
The price of any product is linked to a complicated system of prices ______ everything depends on everything else.
A.where B.which C.that D.of which
答案选A为什么不选D
Chances are high______ China and Russia will make an agreement to build an oil pipeline.
A.when B.where C.that D.which
答案选A为什么不选C
Bungee jumping is an adventurous sport,popular with young adults,______ courage matters more than strength.
A.whose B.that C.of which D.where
答案选D为什么不选A