Why not造句

Why not retrain for a job which will make you happier?
为什么不接受新的培训，找一份让你更快乐的工作？

Why not throw it all in the pot and see what happens?
为什么不把它全扔进罐子，看看会发生什么变化？

Why not wipe the slate clean and start all over again?
为什么不洗心革面、从头来过呢？