Mass nouns, countable vs. uncountable

I like .......... This is a grain and is a non-count noun.

I like ...... This is a grain and is a non-count noun.

I have an antique ...... I do my homework on it every night. This is a 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.

Plants give off ..... and humans release carbon dioxide. This is a non-count noun.

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

..... is a valuable resource and is a fossil fuel. This is a non-count noun.

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 one dog and two ...... This is a count noun.

My husband wears a ..... to work every day. This is a count noun.