a pizza是可数名词吗

I had a whole pizza to myself.

我独自吃了一整个比萨饼。

I always keep a pizza in the freezer as a standby.

我总会在冰箱里放一个比萨饼应急。

We ate a pizza between us.

我们合吃了一张比萨饼。

Is there any pizza left?

还有比萨饼吗？

He cut the pizza into bite-sized pieces.

他把比萨饼切成一口一块的小块。