lt was in December, 2018 ________ Chairman Xi and President Trump met in Argenti

题干

lt was in December, 2018 ________ Chairman Xi and President Trump met in Argentina.

A．when	B．that
C．before	D．since

上一题下一题 0.65难度单项选择更新时间:2019-05-17 06:43:44

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