-- was it they discovered the entrance to the underground place?
--Totally by chance.
A. How; that
B. What ; that
C. When; when
D. Where; that
网友回答
(答案→)A. How; that
B. What ; that
C. When; when
D. Where; that
解析：本题是强调句的考查。考生可以将问句转为陈述句语气，这样题意就比较清晰：“It was how that they discovered the entrance to the underground place．”