It is an"u "and that is a "s"中的an和a是否填对?

It is an"u "and that is a "s"中的an和a是否填对? This is _______"M" and that's __________ "U".A.a,a B.an,an C 英语选择 This is ___ "s" and that's ___ "u".填冠词a an并解释原因 There is an s and a u in this word.为什么对呢 —What's that?It'_________library 填a,an,the —Is this _______c This is a orange.It’s an orange.是否正确. 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, It isn‘t（ ）key,it is（ ）gold ring （填 a 或 an） what’s that?it‘s it is ( )eye括号填a/an There is ( ) "s" and ( ) "u" in the word house.A.a;a B.a;an A:What’s that? Is it a picture? B:Yes, it is an old photo of