The correct sentence is-
two thirds of it is fine.
two thirds of it are fine.
two third of it is fine.
two third is fine.
Explanation:
Correct Answer is: two thirds of it is fine.

two thirds of it is fine.
two thirds of it are fine.
two third of it is fine.
two third is fine.
Correct Answer is: two thirds of it is fine.

The number of COVID-19 related deaths _______ the world. Option A: have overwhelmed , Option B: has overwhelmed , Option C: undefined, Option D: undefined, correct answer is: has overwhelmed
What is the noun form of the word `laugh`? Option A: laughing , Option B: laughable , Option C: laughter, Option D: laughingly, correct answer is: laughter
The adjective of the word `sustain` is ___. Option A: sustainability , Option B: sustaining , Option C: sustainable, Option D: sustainably, correct answer is: sustainable
The adjective `savoury` is connected with: Option A: colour , Option B: dress , Option C: money, Option D: food, correct answer is: food
What is the verb of `vile`? Option A: Vilefy , Option B: Vilify , Option C: Vility, Option D: Vilisy, correct answer is: Vilify