Nouns - Countable & Uncountable

Which noun has both a countable and uncountable meaning? leisure, patience, light, conduct

Which is the plural of "phenomenon"?

I went to the dentist since two (tooth/ teeth) had cavities.

(How much/ How many) of the news is encouraging?

I got scared because of (a bolt / a clap) of thunder.

Is the following sentence correct? Mary really enjoys playing a game of tennis every weekend.

Which of these nouns can NOT be countable: sunshine, fun, luggage, advice?

Is the noun "moose" singular, plural or both?

John is going to master in (an article / a piece / a branch) of chemistry at Harvard.

Which of the following nouns can NOT be countable? (exercise / time / hair / weather)

Which is the correct plural form of "loaf"? (loafes /loaves)