注意：此页面搜索的是所有试题
题目内容
（河南大学大学英语）
Each person at the reunion was required to talk to other relatives to find out if they would buy one of the histories _______ it were printed
A. whether
B. if
C. when
D. after
A. whether
B. if
C. when
D. after
参考答案
