问题描述：
【英语】选择题*1.求分析：Many animals can help people ______ some farm work.
Many animals can help people ______ some farm work.
A.doing
B.do
C.to do
D.does
求选项分析~
Many animals can help people ______ some farm work.
A.doing
B.do
C.to do
D.does
求选项分析~
问题解答：
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