用括号内所给词的适当形式填空（每空不限一词）。
①The ____ (thirty-one) Olympics will be held in Brazil（巴西）in 2016.
②It was____ (care) of Jim to leave the tap running all night.
③— Which do you think is ____ (valuable), time or money?
— Time, I think. When time is gone, it never comes back.
④Usually, books for children ____ (write) in simple languages.
⑤— Could you tell me how ____ (succeed) in making a speech in front of people?
— Be confident. That's the point.
