[即学即练] 写出下列句中work out 的含义
①I hope that the new project will work out well.                                               进展
②He used to work out in the morning everyday.                                         锻炼身体
③You can work out the answer by adding all the number.                                计算出
④The plot is so complicated,and it will take you a while to work it out.             理解
⑤UN negotiators have worked out a set of compromise proposal.                    拟订出