When Lincoln was young , he helped his father the farm.A. inB. onC. atD. for

发布时间：2020-08-16 07:38:29

When Lincoln was young , he helped his father      the farm.
A. in
B. on
C. at
D. for

网友回答

A. in
(答案→)B. on
C. at
D. for
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