Question

Fill in the blank with the most appropriate word.
We will work on the problem ____ we solve it.

• A. why
• B. how
• C. until
• D. by

Answer 1

The correct option is C until

The sentence indicates that the subjects will work on the problem till the time they solve it. Thus, the answer must mean 'till the time'.

Option A is incorrect. 'why' means 'for what reason' and not 'till the time'. Thus, it does not have the correct meaning and is not the correct answer.

Option B is incorrect. 'how' means 'in what manner' and not 'till the time'. Thus, it does not have the correct meaning and is not the correct answer.

Option C is correct. 'until' means 'till the time'. Thus, it has the correct meaning and is the correct answer.

Option D is incorrect. 'by' means 'no later than' and not 'till the time'. Thus, it does not have the correct meaning and is not the correct answer.