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.

Remove শব্দটির Noun- Option A: Remove , Option B: Removal , Option C: Re-movement, Option D: Removing, correct answer is: Removal
`Call me if you have any problems regarding your work`. Here `regarding` is a/an- Option A: gerund , Option B: apposition , Option C: preposition, Option D: conjunction, correct answer is: preposition
The noun form of `repeat` is_____. Option A: repeatation , Option B: repeatasion , Option C: repetision, Option D: repetition, correct answer is: repetition
Which one of the following is not a noun? Option A: Loneliness , Option B: Childhood , Option C: Purity, Option D: Fairly, correct answer is: Fairly
Which one is the verb form of the word, `Popular`? Option A: Popularite , Option B: Population , Option C: Popularize, Option D: Populate, correct answer is: Popularize