It is suggested that we should postpone the meeting because the details have not beenset

问题补充：

It is suggested that we should postpone the meeting because the details have not been

settled.

A. to hold

B. holding

C. to holding

D. having holding

答案：

A. to hold

(答案→)B. holding

C. to holding

D. having holding

解析：postpone doing sth.是固定用法，意思是延期做某事，故选B。