We were swimming in the lake ______ suddenly the storm started.A．untilB．whileC．w_刷题宝

题干

We were swimming in the lake ______ suddenly the storm started.

A．until

B．while

C．when

D．before

上一题下一题 0.64难度单项选择更新时间:2015-06-23 10:03:00

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