Question

look at the text below. if there is an error with subject - verb agreement, select the incorrect verb and type it correctly. otherwise, submit the text without making any changes. before fixing a leak, its wise to turn off the water so that none come out during the repair work.

Explanation:

In the sentence, "none" is used as a pronoun referring to "water" (which is uncountable). When "none" refers to a singular (uncountable) noun, the verb should be singular. So "come" (plural verb) is incorrect; it should be "comes".

Answer:

Before fixing a leak, it's wise to turn off the water so that none comes out during the repair work.