Question

Choose the correct answer to fill in the blank from the options given.
__________ you work faster, we will not finish before dark.

• A. If
• B. Unless
• C. Since
• D. Because

Answer 1

The correct option is B Unless

Here the subordinating conjunction cannot be Option A, C. or D. since none of them indicate the "except, on the condition" case. All the mentioned three cases indicate that the if the person works faster, they will not finish their work on time i.e they'll be slowed down which doesn't make sense. Hence the correct answer is B. Unless since it correctly indicates that if the person does not work faster, they might not finish on time.

Hence, the correct answer is B. Unless

The correct sentence is:

Unless you work faster, we will not finish before dark.