[ Grammar ]
Identify the simple subject in the sentence below.
Does calcium carbonate make the shells of crabs and lobsters hard and stony?
A. calcium carbonate
B. shells
C. crabs
D. lobsters
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Third ConditionalsModal VerbsPrepositions and AdverbsSimple Future - PassiveNarrative, Past TensesDeterminersModal and Auxiliary VerbsNounsWH Questions and Simple Past TenseTime ConjunctionsOther quiz:
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Several women waited in line.
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believe ___ buying good-quality clothes
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