At the computer operation test, one is supposed to stay at his own machine, keep his eyes on his screen, ______ to anyone.
My dictionary ________ . I have looked for it everywhere but still ______ it .
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 couldn't have got to the meeting on time - _______ an earlier train .