What makes - third person singular

[Goran]

English Language Tests, Intermediate level

ESL/EFL Test #98 "Student Teacher Dialogue (1)", question 5

Teacher: What ......... you say that?

(a) makes
(b) does
(c) tries
(d) goes

English Language Tests, Intermediate level

ESL/EFL Test #98 "Student Teacher Dialogue (1)", answer 5

Teacher: What makes you say that?

Correct answer: (a) makes

Your answer was: correct
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hello

i don`t anderstand why it is makes?!
i think it is only in the 3 person singulary...
isn`t it:what make you say that?

[Alan]

Hi,

What makes (3rd person singular) you say (2nd person singular).

Alan
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English as a Second Language
You can read my ESL story A day in the life of a parliamentary candidate