单项选择题
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
单项选择题 It is the best（）I have seen.
单项选择题 The old lady is quarrelling with others as if she（）mad.
单项选择题 Two days is not enough for him to finish the work. He needs（）day.
