题目

If you do your best, I'm sure you'll ________ do it well. A.      can       B. could    C. are able to        D. be able to 答案：D小明家准备春节前举行80人的聚餐，需要去某餐馆订餐．据了解餐馆有10人坐和8人坐两种餐桌，要使所订的每个餐桌刚好坐满，则订餐方案共有_____种．