little by little、 step by step、 one by one、 side by side 各什么意思啊？

选A哈。

A.little by little 一点一点的 Little by little，he grew up。他一点点的长大了。

B.step by step 一步一步的 Follow the instructions step by step。跟着要求一步一步做。

C.one by one 一个接一个 One by one，they left。他们一个接一个的走了。

D.side by side 肩并肩 I will work with you side by side。我会和你并肩工作。