单项选择题

If only I ______ the petrol before we started out. Now I have to push the car to the road side.

A．should check
B．have checked
C．had checked
D．checked
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单项选择题
The old couple bought an expensive house on the island, and in ______ course they would move in.
A．near
B．proper
C．later
D．due
单项选择题
You must let your manager understand the details of the feasibility study ______ by 5 o'clock this afternoon.
A．without fail
B．without trouble
C．without failure
D．without difficulty
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