At discussion, Jack ____ an idea that they should bring down the price of the bicycles.

He knows several languages, ______, he knows English and Japanese.

— May I speak to Mr Smith? — I am afraid not. He is at a meeting now. It’s not ___.

— Why not buy a second-hand car first if you don't have enough money for a new one?— That's a good        .

Employees need to ____________ the latest technical developments.