There is____ s and _____ u in the word sun 为什么选an...a...

There is____ s and _____ u in the word sun 为什么选an...a... 单项选择1.There is ( ) "s" and ( ) "u" in the word "sun".A.a.an There's 'u' and 'r' in the word 'umbrella'.A:a;an B:an;an C: In the word "us" there is____"u" and____"s" There is ________"s'' in the word "sun''(a,an) There is ( ) "s" and ( ) "u" in the word house.A.a;a B.a;an There is _____ “u” and “s” in the word “use”.A.a There is an s and a u in this word.为什么对呢 用a,an填空 There is __"u" ___ "s" and ___ "e"in the word there is () u and ()s in the word “us” 填写a和an There is ( )"u"and( )"s"in the word"use"?答案是a和an, there is ()u and()m in the word music用an a填空,为什么