14. (2018南充)My parents don't allow me ________ late.
A. stay up  B. to stay up  C. stays up  D. staying up
14. B【解析】考查动词不定式。句意：我的父母不允许我熬夜很晚。根据固定搭配“allow sb. to do sth.允许某人做某事”可知用不定式。故选B。