问题
选择题
Hardly returned home I realized I had left my key at the office.
A．have I; when
B．had I; when
C．have I; than
D．had I; than
答案
答案：B
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Hardly returned home I realized I had left my key at the office.
A．have I; when
B．had I; when
C．have I; than
D．had I; than
答案：B