题干
— I hear you have written a novel?
— Yes, the book ____ come out in a month or so.
— Yes, the book ____ come out in a month or so.
A：ca
B：must
C：should
D：would
答案(点此获取答案解析）
C
再转化为酯和水，以上反应均为可逆反应，回答下列问题：