Pair of shoes (be) blue

Pair of shoes (be) blue

Is, because the pair here is singular, not shoes

Be, this, nice, pair, shoes, of

Is this pair of shoes nice

Why use singular numbers in front of some chocolate and a box of chocolate and plural numbers in back?
Has anyone added that I still don't understand?

The former should refer to some chocolates, the concept of no quantity, just to explain an objective fact, so it is regarded as uncountable; the latter uses the plural to refer to a box of chocolates, which is the concept of quantity

Is the noun after a lot of singular or plural

Plural form of countable nouns

Are the subjects of a lot of money and lots of money singular and plural?

A lot of = lots of
The answer to the question is that both are singular, money is uncountable, as singular!
Countable or uncountable nouns can be added after a lot of and lots of, and the predicate is determined by the noun added

Is the verb after a lot of information singular or plural?

Information is uncountable

Water plural
It is helpful for the responder to give an accurate answer

Is it an uncountable noun, the plural unchanged, or water

Plural form of water
And horse house pleyer carrot eye money CD meat paper man letter box
computer

Waters horses houses pleyer carrots eyes money CDs
Papers men letters boxes

What is the usage of the singular or plural verb in the most standard way

Water itself is uncountable and should appear in singular form
But when expressing all kinds of water, for example, when you want to express different water sources and different kinds of water, you can use the plural form waters

Why use is instead of are?

Water is an uncountable noun, not a singular or plural noun,
Therefore, pragmatics is not are