来源：http://www.testden.com/
The Cayman Islands is a haven ________ investors need not worry about capital
gains tax.
a) which
b) whom
c) where
d) why
Ans: C
感觉where or which 唸起来都很顺阿QQ
实在是分不清楚 两者的差别
有无高手可以相助