Why we have to use do?

[dalia mee]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #121 "English Grammar Tenses", question 1

......... any one object if I turn the heating down?

(a) Do
(b) Does
(c) Did
(d) Doing

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #121 "English Grammar Tenses", answer 1

Does any one object if I turn the heating down?

Correct answer: (b) Does
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why do we have to use do

dalia

[Alan]

Hi dalia,

This is a question and so we use the auxiliary 'do' as in:

Do you object?

Did you inderstand?

Does she object?

Alan
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English as a Second Language
You can read my ESL story The Name of the Game