【C9】
A.to
B.for
C.of
D.on
请帮忙给出正确答案和分析,谢谢!
A.toB.forC.ofD.on
【C9】A.forB.forC.toD.on
【C9】A.toB.inC.ofD.with
【C6】A.toB.forC.withD.on
He had no objection______changing his working hours.A.toB.inC.ofD.on