Hi anurag_7,
The word "costs" can be used as a noun OR a verb.
eg.
This car costs $5,000.
The costs of these courses are too high.
While the GMAT tests a set of standard grammar rules and idioms, you still need "context" to know what rules apply to any given question.
GMAT assassins aren't born, they're made,
Rich
Singular/ Plural
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Source: Beat The GMAT — Sentence Correction |
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