He had to retire(退休)early_____poor health.A．as a resultB．becauseC．soD．because of_刷题宝

题干

He had to retire(退休)early_____poor health.

A．as a result

B．because

C．so

D．because of

上一题下一题 0.4难度单选题更新时间:2018-09-16 07:30:38

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