I often think of those occasions ______ we had a happy time together.A．whichB．wh_刷题宝

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I often think of those occasions ______ we had a happy time together.

A．which	B．when
C．on which	D．Both B and C

上一题下一题 0.64难度单项选择更新时间:2014-11-18 08:06:26

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