Mass nouns, countable vs. uncountable

I buy beef ..... for my dog every two weeks. She likes to chew on them for hours. This is count noun.

I just got my ..... done yesterday. The stylist cut and styled it for me. It looks great. This is a non-count noun.

I bought new ..... before I went on a trip to Hawaii. I wanted to look stylish in the airport and both pieces are quite functional because they have wheels.

I would like a ..... of tea. This is a count noun.

A ..... is a count noun. We often open these to let fresh air into our homes.

I saw a lot of ..... during the thunderstorm last night. All of the bolts seemed nearby and that was kind of scary. This is a non-count noun.

I have to buy some allergy ..... because there is a lot of pollen in the air at this time of year. This is a count noun.

I like to use maple ..... on my pancakes. It's delicious. This is a non-count noun.

I want to paint two ..... in this room. This is a count noun.

Children have a lot of ...... They also have a lot of questions. This is a non-count noun.