Question

We shall fail .............. we are industrious.

• A. until
• B. unless
• C. though
• D. whether

Hint:

Use “unless” in conditional sentences to mean “except if” or “if not”.

Answer 1

The Correct Option is B

The sentence is conditional and expresses that failure will occur except in the case where we are industrious.
The word “unless” means “except if” or “if not”, and is the correct conjunction for this type of conditional statement.
“Unless we are industrious” means “if we are not industrious”.
Option (a) “until” refers to time and means “up to the time when”, which does not fit here because the sentence is not talking about a time frame but a condition.
Option (c) “though” means “although” and is used for contrast, not for setting a condition.
Option (d) “whether” is used to introduce alternatives, e.g., “whether you like it or not”, which is not the function needed in this sentence.
Therefore, “unless” is the only option that expresses the intended meaning correctly.
The full sentence reads: “We shall fail unless we are industrious,” meaning that industry and hard work are the only ways to avoid failure.