Multiple choice general knowledge

Although Dr. Singh had several assistants during his long investigations of Andaman Islands, the bulk of research was done by ……..alone.

  1. himself

  2. he

  3. him

  4. his
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

After prepositions, use the object case pronoun. By is a preposition, so him (object case) is correct. Himself would be redundant with alone, he is subject case, and his is possessive. The bulk of research was done by him alone.

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