We were swimming in the lake _____ suddenly the storm started.A．whenB．whileC．unt_刷题宝

题干

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

A．when

B．while

C．until

D．before

上一题下一题 0.64难度单词拼写更新时间:2012-12-30 07:22:56

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