问题
选择题
I can never forget the days________we worked together and the days________we spent together.[ ]
A．on which；when
B．which；when
C．what；that
D．when；which
答案
答案：D
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I can never forget the days________we worked together and the days________we spent together.[ ]
A．on which；when
B．which；when
C．what；that
D．when；which
答案：D