问题补充:
His success the fact he had been working hard.
A. put in; which
B. led to; because
C. lay in; that
D. got in; that
答案:
A. put in; which
B. led to; because
(答案→)C. lay in; that
D. got in; that
解析:lie in在于,that引导一个同位语从句。put in(正式)提出、花费(时间)、插话、安装; lead to导致、结果;get in到站、当选、插话、上车、请来、加入。若单看第一空,lead to也对。