(2013·江西十所重点中学二模)The businessman wears a suit and a tie with a beard ________ the season

Leave your key with a neighbor ______youlock yourself out one day．

It would be unfair to clone any extinctanimalsthey were to live in azoo.

Must I show you how to play the game?—Oh,thank you.I______how to do it

You must notice ________ the emergency exit is when you enter the building.