ESL test problem: As far as I know paint is 3rd singular? Why dry?

[Turtle]

Hi everybody!

So, I did this test and had a score 7/10. Those 3 that were not correct are problems. I don't understand what my answer is not the correct one. Please help me

1. That programme is so boring that it's like watching paint dry.

Correct answer: (c) dry

Your answer was: incorrect
your sentence:
That programme is so boring that it's like watching paint dries.

- as far as I know paint is 3rd singular? why dry?

2.I honestly think that the time has come when we should celebrate our success.

Correct answer: (a) has

Your answer was: incorrect
your sentence:
I honestly think that the time will come when we should celebrate our success.

-why not will? why has?

Thank you very much :)

[Mister Micawber]

1-- as far as I know paint is 3rd singular? why dry?-- Because it is not a finite verb. The finite verb is 'watch'; 'dry' is an infinitive. 'Paint' is a direct object.

2-- 'Will' is grammatically possible, but unusual semantically. The test writer should revise the answer set.
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Native English teacher at Mister Micawber's

[Turtle]

Hi Mister Micawber.

I still don't understand the 1st one. I know that paint here is noun. And it should be 3rd singular, so I don't understand why it is matter finite verb? Could you explain in more details, please?

[Mister Micawber]

Non-finite verbs do not change with the person.
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Native English teacher at Mister Micawber's