问题
选择题
When I finally got up to leave, we both knew that a real friendship ________ between us
A．have formed
B．will form
C．is to form
D．was to form
答案
答案：D
主句中的谓语knew用的过去式，从句也要用相应的过去时态，排除A、B、C。只有D项是过去时态，故选D。
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