there is o u and r in the world our 打空格中间用an 还是a

there is o u and r in the world our 打空格中间用an 还是a 翻译There is an “f” and a “u” in the world “four” there is ()“m”and()“u” in the world “music”填an或a there is -------"r" and -----"u"in the word ruler A an,an Ba 哪些单独字母前面加an,比如例题：There is an “h” and a“u” in the world "hous There is ___ a "r" and ___"u" in the word"really".用a或an填空. There is ___"o" and ____"u"in the word "house" A.a,a B.an,an There's 'u' and 'r' in the word 'umbrella'.A:a;an B:an;an C: There is ___"R" and—— "U"in the word understand 填an 或a ———(这 there is ()u and()m in the word music用an a填空,为什么 用a,an填空 There is __"u" ___ "s" and ___ "e"in the word there is __"f"and ___"u"in the word "fun".用a,an填空