turn up 出现;发生
Something unexpected has turned up. 发生了没有意料到的事情。
He's still hoping something (eg a job or a piece of good luck) will turn up.他仍在期待机会出现(如得到工作或好运).
We invited her to dinner but she didn't even bother to turn up.我们请她吃饭她都不露面。

turn down 拒绝
I turn down the offer.我拒绝那个提议。
The board turn down all approach on the subject of merger.董事长拒绝了有关合并事宜的任何协商。
She turn down every offer of help.别人提出的帮助他都拒绝了。

If I'd brought a toad I'd lose it as quick as I could

虚拟语气在if条件状语从句中的用法
与现在事实相反：（从句谓语动词）动词的过去式(be用were而不用was)
（主句谓语动词） should/ would /could/ might+动词原形
与过去事实相反：（从句谓语动词） had + 过去分词
（主句谓语动词） should/ would/could/might + have+过去分词
与将来事实相反：（从句谓语动词）1.should+动词原形 2.动词过去式 3.were to+动词原形
（主句谓语动词） should/ would/ could/ might +动词原形