他一年后回来 用英语怎么说

题目

他一年后回来 用英语怎么说
he wil move back into town in a year or _____.
A so B later C after
这题我明白
如想表达“他一年后回来 ”能否说
he wil move back into town in a year later.
he wil move back into town a year later.
he wil move back into town after a year .

答案

in a year就是一年后,后面不要加任何词了
or so是大约的意思