—Doctor, what do you think about the operation on my mom?—Couldn’t be better．I’m sure she’ll recover ___________.A.one by oneB.side by sideC.by and byD.by the by
网友回答
C解析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。