题目内容
Tom usually helps his uncle ________ the farm ________ the farm work.
[ ]
A.in; for
B.on; for
C.on; with
D.in; on
答案:C
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题目内容
Tom usually helps his uncle ________ the farm ________ the farm work.
A.in; for
B.on; for
C.on; with
D.in; on