As for the missing funds, the company manager, when demanded to give an explanation, could not even come up with a______one.(北京大学2005年试题)

单项选择题The food was divided______according to the age and size of the child.(中国人民大学2007年试题)

单项选择题Tom doesn’t think that the______situation here is as good as his hometown’s. (中国人民大学2007年试题)