1.答案用B offer
2.主要看常用短语的结构上的区别:
1)offer sb sth=offer sth to sb
offer to do sth 主动提出做某事
offer sb some money for sth=buy sth from sb for some money=pay sb some money for sth 买
offer sb sth for some money=sell sb sth for some money 卖
2) supply sb with sth=supply sth to sb
3.题中结构后面为sb sth即双宾语结构,所以只能用offer.