Irregular and regular plural noums

Nurses take care of (a)   (baby) in the hospital.

To make a big bowl of potato salad, we need a lot of (a)   (potato)

Is your (a)   (feet) alright? Because your shoes are wet and stinky.

Because of an earthquake, my house's (a)   (roof) fell down to the ground.

I have taken several (a)   (photo) of my idol on the concert last year.

Those (a)   (man) just moved to the seat in front of us. It was suspicious

There are so many (a)   (zoo) that are closed by the government due to covid-19 pandemic.

Last week, Mia and I visited a ketchup factory. As I expected, high quality (a)   (tomato) make the ketchup products very good.

When I went to an amusement park, I saw a parents who were looking for their two (a)   (child).

On our trip to the mountains countryside, we saw some..... (wolf), ....(fox),...... and (sheep)

(a)