问题
选择题
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
答案：C
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。