问题补充：
, he would have been fired.
A. Had he lied to the boss
B. Did he lie to the boss
C. If he has lied to the boss
D. If he lies to the boss
答案：
(答案→)A. Had he lied to the boss
B. Did he lie to the boss
C. If he has lied to the boss
D. If he lies to the boss
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