Human beings are different from animals _______ they can use language as a tool to communicate.
The news about the terrible flood there greatly discouraged ______ these for a sight-seeing .
He's unlucky , and he's always suffering _____ luck one after another .
Our decision _____ was wise .
I'll have you ______ English in six months .
I couldn't have got to the meeting on time - _______ an earlier train .