单项选择题A．Avoid junk food.B．Attend monthly meetings.C．Buy cleaning supplies at the co - up.D．Work at the co - up.

填空题convenience或processed

单项选择题A．Lowering its prices.B．Selling more household necessities.C．Changing its membership rules.D．Opening up more checkout lines.

填空题infection

填空题blood或arteries