We should keep trying, and I think our efforts will finally .
A. pay out
B. pay back
C. pay for
D. pay off
网友回答
A. pay out
B. pay back
C. pay for
(答案→)D. pay off
解析：词义辨析题。 A．pay out 出钱 B．pay back 还钱 C．pay for 支付….的钱 D．pay off 取得成功 我们应该一直努力我想我们的努力最终取得成功的。 根据语境选D