Multiple choice

Directions: Fill in the blank with appropriate preposition.

Snakes and mongoose have been enemies _____ centuries.

  1. since

  2. for

  3. till

  4. across
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

‘For’ should be used. Hence, option 2 is correct. We use for when we measure time (seconds, minutes, hours, days, months, years). We use since with a specific date or time.

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