The student, along with his parents, ________ asked for information on the book so far.
A．was B．were
C．have been D．has been
The student, along with his parents, ________ asked for information on the book so far.
A．was B．were
C．have been D．has been
解析：句意：到目前为止，这个学生和他的家长已经就这本书的问题接受过询问。主语后有along with...，谓语动词的形式仍与主语一致；此处主语是the student，谓语动词要用单数，且根据so far判断用现在完成时。
答案：D