将下面对话补充完整.
问题描述：
将下面对话补充完整.
A:______ ＿＿＿ ＿＿＿ dong?
B：I’m reading．
A：＿＿＿＿ ＿＿＿＿ are you reading?
B：＿＿＿＿ ＿＿＿＿ reading Dr Bethune．
答
A:What are you doing dong?
B:I'm reading.
A:What book are you reading?
B:I am reading Dr Bethune.
这是我请教我爷爷的,我爷爷是英语副教授,我想应该没错吧