问题补充：
单选题Havingyouever______infrontofthousandsofpeopleataconcert,witheveryone_____whileyouweresinging?A.dreamed of to be; clappedB.dreamt to be; to clapC.dreamed of being; clappingD.dream of being; to be clapping
答案：
C解析第一空dream of 后面应该接动名词；第二空是with的复合结构，with sb doing sth;sb和do之间存在着主动的关系，所以后面使用现在分词doing.
