单选题 After __________ seemed an endless wait, it was her turn to enter the chief manager's
【正确答案】 C
【答案解析】考查宾语从句。after后面缺少一个宾语，seemed前面缺少一个主语，因此要选择一个既能充当after的宾语又能充当seemed主语的关系代词，what在这里相当于something+which，故选C。