We were about to set off _____ Tom came to me.A．whileB．whenC．asD．since_刷题宝

题干

We were about to set off _____ Tom came to me.

A．while	B．when
C．as	D．since

上一题下一题 0.65难度单项选择更新时间:2018-08-21 02:01:20

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