turn up 出現;發生
Something unexpected has turned up. 發生了沒有意料到的事情。
He's still hoping something (eg a job or a piece of good luck) will turn up.他仍在期待機會出現(如得到工作或好運).
We invited her to dinner but she didn't even bother to turn up.我們請她吃飯她都不露面。

turn down 拒絕
I turn down the offer.我拒絕那個提議。
The board turn down all approach on the subject of merger.董事長拒絕了有關合并事宜的任何協商。
She turn down every offer of help.別人提出的幫助他都拒絕了。

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

虛擬語氣在if條件狀語從句中的用法
與現在事實相反：（從句謂語動詞）動詞的過去式(be用were而不用was)
（主句謂語動詞） should/ would /could/ might+動詞原形
與過去事實相反：（從句謂語動詞） had + 過去分詞
（主句謂語動詞） should/ would/could/might + have+過去分詞
與將來事實相反：（從句謂語動詞）1.should+動詞原形 2.動詞過去式 3.were to+動詞原形
（主句謂語動詞） should/ would/ could/ might +動詞原形