问题
选择题
They let us use their computer, and_________we gave them the results of our research.
A．in short
B．in turn
C．in fact
D．in return
答案
答案：D
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They let us use their computer, and_________we gave them the results of our research.
A．in short
B．in turn
C．in fact
D．in return
答案：D