Question

Read the sentences.What follows earsh ctructurs,a plural or singular verb?

Answer 1

Both sentences are followed by a plural verb (После предложений с both (и…и) следует глагол во множественном числе).
Neither sentence is followed by either a singular or plural verb (После предложений с neither (ни…ни) следует глагол либо в единственном, либо во множественном числе).
Either sentence is followed by a singular noun (После предложений с either (либо...либо) следует существительное в единственном числе).

Answer 2

The subject "earsh ctructurs" is not a standard English phrase, and it appears to be a typo or a misspelling. Therefore, it's difficult to determine whether a plural or singular verb should follow without more context or a correction of the phrase. If you could provide the correct or intended phrase, I'd be happy to help you determine the appropriate verb form to use.