4
Also 'since five years' should be 'for five years'
Answer: A (Tense error with time signal)
Shortcut Formula 3 - Elimination Strategy:
Read options A and B first. 70% errors occur in first two parts. If both seem correct, check C and D. This saves 30-40 seconds per question.
Common Trap - The #1 Mistake: Students often choose 'No Error' when they can't spot obvious mistakes. In SSC CGL, only 15-20% questions have no error. Always re-examine using PASTA method before selecting option E. Many students miss subtle preposition errors like 'different than' (wrong) vs 'different from' (correct).
Another major trap involves collective nouns. Words like team, family, committee, class can be singular or plural depending on context. When acting as unit = singular verb. When emphasizing individual members = plural verb