One morning ,we were working on math problems at the chalkboard .Donnie had copiedthe problems
问题描述：
One morning ,we were working on math problems at the chalkboard .Donnie had copiedthe problems
One morning ,we were working on math problems at the chalkboard .Donnie had copied the problems with pains-taking tidiness .
答
一天上午,我们在黑板上做数学题.题是多尼费了很大劲整整齐齐地抄在黑板上的.