问题
选择题
——Doctor, what do you think about the operation on my mom?
——Couldn’t be better．I’m sure she’ll recover ___________．
A．one by one
B．side by side
C．by and by
D．by the by
答案
答案：C
by and by不久，马上； side by side肩并肩地； one by one逐个地，一个接一个地； by the by 顺便提一下．从句意来看，C项适合。