Question

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

Answer 1

C

for himself為自己； on himself靠自己；by himself通過自己，靠自己； with himself和自己。句意：在過去，這個男孩在他的父親的幫助下做作業，但是現在他能夠獨自完成了。on himself前與搭配動詞depend結合語境可知選Ｃ。