Pronouns in question tags: แบบฝึกหัด

Consider the following sentence where the subject includes an indefinite pronoun:
"Nobody in the group discussion was maintaining eye contact with the speaker, ______?"
Select the appropriate question tag.

Identify the correct question tag for the following statement: "This is your new smartphone, _______?"

Complete the following sentence with an appropriate question tag and explain the choice of pronoun: "Those are the books you borrowed from the library, _______?"

Compare the use of pronouns in question tags for the subjects "Everyone" and "Everything". How do the resulting tag pronouns differ and why?

Consider the following complex statement about a Physical Education lesson:

"None of the students have listed the four phases of the long jump yet, ______?"

a) Determine the correct pronoun to use in the question tag and explain the rule for indefinite pronouns like 'None'.
b) Identify the tense used in the main clause and provide the corresponding auxiliary for the tag.
c) Determine the polarity (positive or negative) of the question tag and explain why, referring to the word 'None'.

Examine the sentence:

"Everything regarding the school's Open Day preparations was handled professionally, ______?"

a) Identify the pronoun required for the tag and explain the difference between tags for 'Everything' versus 'Everyone'.
b) Provide the complete question tag.
c) If the sentence began with "There were many visitors...", what would the pronoun in the tag be?