Mary devoted much of her time _______ the disabled people.A．in helpingB．to helpi_刷题宝

题干

Mary devoted much of her time _______ the disabled people.

A．in helping

B．to helping

C．help

D．to help

上一题下一题 0.4难度单选题更新时间:2019-09-26 10:17:02

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