Identify the meaning of 'sophisticated', identify a conjunction, identify the opposite of 'fast', identify an adverb, and explain the idiom 'cost an arm and a leg'.

The word "sophisticated" means complex, intricate, or highly developed. B. Complex

A conjunction is a word used to connect clauses or sentences or to coordinate words in the same clause. "And" is a conjunction. A. And

The opposite of "fast" is "slow". A. Slow

An adverb modifies a verb, an adjective, or another adverb. Adverbs often end in "-ly". "Quickly" is an adverb. A. Quickly

The phrase "cost an arm and a leg" is an idiom meaning that something is very expensive.