问题
选择题
.The petrol tank is empty.I _________it up before we left home.
A．had to fill
B．would have filled
C．should have filled
D．could have filled
答案
答案：C
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.The petrol tank is empty.I _________it up before we left home.
A．had to fill
B．would have filled
C．should have filled
D．could have filled
答案：C