Which of the following can't be used as a verb?

Correct answer: None of these.

• Mine: [verb]
English meaning: to dig coal or another substance out of the ground.
Bangla meaning: mine (for) (কয়লা, আকরিক ইত্যাদি) খুঁড়ে তোলা; খনি থেকে উত্তোলন করা, খনন করা, খনি খোঁড়া: mine (for) coal/gold; mine the earth for coal.

Example: They mine a lot of copper around these parts.

• Up: [verb]
English meaning: to increase the amount or level of something.
Bangla meaning: বাড়ানো।

Example: We won’t be able to make a profit unless we up our prices.

• Better: [verb]
English meaning: to improve a situation, condition, or person.
Bangla meaning: অধিকতর ভালো করা; অপেক্ষাকৃত উৎকর্ষসাধন করা।

Example: The organization was established to better conditions for the disabled.

Source: Cambridge, Oxford & Accessible Dictionary.