9.( ) Sam: Hi, Ann, __________ my sister, Doris.Ann: Nice to meet you, Doris. Doris: Nice to meet yo
問題詳情
9.( ) Sam: Hi, Ann, __________ my sister, Doris.Ann: Nice to meet you, Doris. Doris: Nice to meet you, too. (A) you are (B) it is (C) this is (D) her is