pile|piled|piles|piling

操场上有一大堆沙子。

There is a large ___pile of sand in the playground.

她书架上有一堆书。

She has a ___pile of books on her shelf.

这就像在草堆里找针一样。

It was like finding a needle in a ___pile of straw.

我今天有一堆事情要做。

I've got a ___pile of things to do today.

他有很多钱。

He's got ___piles of money.

他有一堆工作等着他。

He had a ___pile of work waiting for him.

工人们把箱子整齐地堆在门旁。

Workers ___piled the boxes neatly beside the door.

他们正把靠垫堆到一个角落里。

They are ___piling the cushions in one corner.