补写出下列句子中的空缺部分。 (1) 毛.泽东《沁园春·长沙》中“,”两句回忆了当年求学期间同学们意气奔放、正强劲有力的情景。 (2) 在《荆轲刺秦王》一文中燕国太子丹及宾客送荆轲前去刺杀秦王,高渐离击筑,荆轲以歌相和,士皆垂泪涕泣。他又上前唱歌曰:“,”,复为慷慨羽声,,发尽上指冠。 I don’t remember how many years ago ________ State Street began its business in China. A. it was when B. it was that C. was it when D. was it that