Question

Choose a suitable adverb clause (conditional) to complete the sentence:
I will not take you to the playground .

• A. because of the rains
• B. due to the weather
• C. unless you finish your homework on time
• D. none of the above

Answer 1

Answer: (C)

unless you finish your homework on time

An adverb clause is a group of words containing a subject and a verb, and it functions as an adverb, by modifying an adjective, verb or an adverb. Adverb clauses generally begin with a subordinate conjunction (since, because, while, etc.).
Option C is correct because it is an adverb clause of condition, 'unless' is a subordinate conjunction that refers to a condition and means 'except if'.
Option A is incorrect because it is a phrase, not a clause.
Similarly, option B is incorrect because it is a phrase.
Option D is incorrect because the answer lies in C.