问题补充:
-----How can I get to the wooden tower?
------There are two paths here and , I hear , of them leads to it.
A. all
B. both
C. either
D. none
答案:
A. all
B. both
(答案→)C. either
D. none
解析:A. all三者以上都,B. both两者都,C. either两者中任何一个,D. none 三者以上都不,句意:--我怎么能到达木塔?--这里有两条路,我听说,任何一个都能达到。因为是两条路,所以排除AD,还有因为用了leads,所以排除只能选C。