He worked many hours a day he became seriously ill.A．sinceB．even ifC．whenD．unt_刷题宝

题干

He worked many hours a day he became seriously ill.

A．since

B．even if

C．when

D．until

上一题下一题 0.4难度单选题更新时间:2019-10-09 07:43:46

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