问题
单项选择题
We（）the distress signal on our own radio before the shore station relayed it to us.
A.received alreadly
B.have received
C.had received
D.was receiving
答案
参考答案：C
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We（）the distress signal on our own radio before the shore station relayed it to us.
A.received alreadly
B.have received
C.had received
D.was receiving
参考答案：C
