Why can we use does with I?

[Gelli]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #119 "Gerund or Infinitive", question 4

And at other times I'm glad I ......... know what the future holds.

(a) didn't
(b) doesn't
(c) hadn't
(d) don't

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #119 "Gerund or Infinitive", answer 4

And at other times I'm glad I don't know what the future holds.

Correct answer: (d) don't

Your answer was: incorrect
And at other times I'm glad I doesn't know what the future holds.
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why can we use does with I?

Gelli

[Daniela]

Dear learner,
It is a grammar rule that we should use DOES as an auxiliary verb for 3rd person singular:
I DON'T know.
You DON'T know.
He/ She DOESN'T know.
We DON'T know.
You DON'T know.
They DON'T know.
By the way, if you think about it, you will see that "S" always appears in 3rd person singular:
IS - haS - playS/ doES... - waS, etc.

Daniela
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[Snoopy_Blah_Blah]

Why can not we use Past Simple Tense, I didn't know what the future holds? I answered correctly on this question, but do not understand the use of Present Simple here. Could somebody, please, explain?

[Mister Micawber]

.
Present is required with the present 'holds' in the dependent clause.
.
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Native English teacher at Mister Micawber's

[Durra]

hi,
i still don't undrstand why the answer is ' didn't ' not ' don't '??............

[Mister Micawber]

.
The answer is 'don't'.
.
_________________
Native English teacher at Mister Micawber's