问题描述：
--- uncle in black is --- university professor .He said he would visit our school ----third time.
A.An,a,the B.The,a,a,C.A,a,the D .A,an ,the 请选择,并说明理由.
A.An,a,the B.The,a,a,C.A,a,the D .A,an ,the 请选择,并说明理由.
问题解答：
我来补答展开全文阅读