He isn’t a man who knows _____ to deal with people properly, but he does know _____ to do with all kinds of papers in front of him.

 --Can you tell me    ?--By doing more reading.

Contrary to the opinion of the public, the chairman decided to appoint _______ he thought was equal to the job.

— Do you know ______ for New York last night? — At 9:00.

They are still very cautious about ________ side effect the new medicine will bring about, although the experts have tried it on about 2000 patients．