dig的過去式和過去分詞和現在分詞

They dug in their heels and would not lower the price.

他們説什麼也不肯降價。

I dug around in my bag for a pen.

我在包裏到處翻找筆。

We dug a deep pit in the yard.

我們在院子中挖了個深洞。

The enemy must be digging themselves in now ready for the attack

敵人現在一定在挖掩體，準備迎接進攻。

I think I'll do some digging in the garden.

我想我該給花園鬆鬆土了。