How to paraphrase a wordy sentence [closed]
My friend John, a smart postgraduate, once worked on a project which was assigned by his professor and was required to finish in three months.
A couple of suggested alternatives:
John, my friend and a smart postgraduate, was assigned by a professor to work on a project with a completion time of three months.
John, a smart postgraduate and friend, had a professor who assigned him to work on a project with a completion time of three months.