Are the verbs after the young, someone, everybody, nobody singular or plural?

The old are taking good care of by those young man

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1. In general English, are verb noun collocations plural? For example, we go by ships. But we go by plane. And I come by bike
2. Can all verbs be changed into nouns by adding Er after them Today, I read a word reformer revolutionist, which is not found in baidu dictionary. I can only find reformer revolution, so I think that killing is followed by Er, which is a killer. There are still many such cases. Is it possible to add Er after all verbs to change nouns, such as Sayer speaker, seeer viewer and typewriter?
3. Don't use the common one I want to be professional one less It's better to have some connection between verbs and nouns These are a few work teach drive run swim read paint sing dance write ride play clean kill think
4. Which verb + ER becomes a noun? (except worker, teacher, driver, runner, swimmer, reader, painter, singer, dancer, writer, rider, player, winner)
5. Verb plus Er to change NOUN Work paint teach sing drive run swim read dance write ride play Four more,
6. What are the nouns and verbs of educational?
7. How do verbs change nouns
8. Words with verbs and nouns
9. Words with verbs and nouns
10. How to describe the verb noun in English? also Words; words OK (adjective)_____ Adverbs_____
11. Is the verb after someone singular or plural
12. The structure of subject + intransitive verb + noun makes five English sentences,
13. When do you use gerund as subject and infinitive as subject at the beginning of a sentence? I often make mistakes when making multiple choice questions, such as: 1. () that her son would do well, Mary sent him to a private school. A to determine B determining C determined d to be determined (d) 2. () that the door is locked before you leave the room. A making sure B making sure C be sure d to make sure (c),
14. If the subject of a sentence is two uncountable nouns, should the be verb and predicative be plural or singular? For example: water and soup______ ( be) _______ Are these two empty words singular or plural?
15. Is the uncountable noun followed by be or is? RT
16. Nosie is a countable noun or an uncountable noun, be verb is or are
17. Be verb before uncountable noun can only be is? There ___ is__ some milk in the cup. Article or numeral cannot be used directly before uncountable noun
18. Uncountable noun as subject be verb Using is as an uncountable noun as the subject, do you add s or es
19. 86.the days are short,___ it is now December. a.because b.for c.goes d.want Please talk about the difference between "because for" and "because for"
20. 86.The days are short,_______ it is now December.A.because B.for C.goes D.want What are the meanings of these four words in a sentence? This is a fallible question. Please be careful,