he offered to supply us_another clock free of charge.A.with B.for C.of D.to

问题描述:

he offered to supply us_another clock free of charge.A.with B.for C.of D.to
为什么?这个要怎么翻译

supply sb.with sth.= supply sth.for sb.为某人提供某物,这是固定搭配.因此选A .
another 另一个,再一个,
offer to do sth.主动提出做某事
句意:他主动提出要为我们再免费提供一个时钟.