there is--------”u” and------”s" in the work

there is________”u” and______”s" in the word "use"正确是要填:a ; anThere is a "u" and an "s" in the word "use"以下是26个字母的全表:An AA BA CA DAn EAn FA GAn HAn IA JA KAn LAn MAn NAn OA PA QAn RAn SA TA UA VA WAn XA YA Z【很希望我的回答会对你有帮助。如有不明白,可以再追问,并祝你进步!】