Question

Even though he has come here for almost one year, it is hard for him to fit ________ with the environment here.

 

Answer 1

in　

【解析】考查短语意义。句意：虽然他来这儿快一年了，但对他来说还是很难适应这里的环境。fit in with...“与……相适应/融和”，符合句意。