Both of my roommates-------decided to live in the dorms.
Correct answer: B. have
- A. has
- B. have
- C. had
- D. will have left
Explanation
The correct answer is have, as it is the plural form of the verb "have" that agrees with the plural subject "Both of my roommates." This structure indicates that both individuals made a decision together. Options has, had, and will have left are incorrect because they do not match the plural subject or the present context of the sentence. "Has" is singular, "had" is past tense, and "will have left" is future perfect tense, making them unsuitable for this sentence.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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