Happinessisabutterfl的精选

问题详情：Happinessisabutterfly,which,whenpursued,isalwaysjustbeyondyourgrasp,but________,ifyouwillsitdownquietly,mayalightuponyou.A.that  B.which  C.one   D.whose【回答】B知识点：定语从句题型：选择...