题目内容
The boy did his homework with the help of his father in the past．But now he can do it alone．
[ ]
A．for himself
B．on himself
C．by himself
D．with himself
答案：C
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题目内容
The boy did his homework with the help of his father in the past．But now he can do it alone．
A．for himself
B．on himself
C．by himself
D．with himself
