People have been complaining about SK-II recently and think the advertisements always persuade people _________ the products which are not so good. [ ]

A. buy    

B. to buy  

C. buying    

D. bought

FIDIC《土木工程施工合同条件》规定，发包人在按照履约担保提出索赔前，( )通知承保人，说明导致索赔的违约性质。

A．无需

B．某些情况下，需要

C．皆应

D．视情况而定