Mr.Dai is the h[ ] of our school. 答案:headmaster。戴先生是我们学校的校长。My grandprarents are b[ ] teachers. 答案:both。我的祖父母都是老师。You cannot buy a new pen from the shop. It is c[].答案:closed。你不能从这家商店买到一只新钢笔。它关门了。Sorry, I can not play basketball with you. I am b[ ].答案:busy。对不起,我不能和你一起打篮球。我很忙。...