单项选择题
What they are（）about is which comes first: the chicken or the egg?
A.summing B.striking C.stirring D.arguing
单项选择题 We all（）your coming to help us.
单项选择题 I never realized that someday I would be married to a（）
单项选择题 Milk,butter,and cheese are（）here from the farms.
