Choose the most suitable option to replace the highlighted part of the sentence
They have been working on this project since four months.
Answer और ExplanationAnswer and explanation
Answer: (D) for four months
Concept (For with Period of Time) 'Four months' जैसी अवधि के साथ for आता है, जबकि since किसी समय-बिंदु के साथ आता है, जैसे since 2020। विकल्प C में since गलत है, और विकल्प B में article छूटा है; सही रूप for the past four months होगा। अतः सही विकल्प D है।
✓ सही वाक्य: They have been working on this project for four months.
Examiner का जाल यह है कि 'since' के साथ present perfect continuous (पूर्ण अपूर्ण वर्तमान काल) सही लगता है, इसलिए छात्र since वाले विकल्प को स्वीकार कर लेते हैं।
Concept (For with Period of Time) A period of time (four months) takes for, whereas since goes with a point in time (since 2020).
✓ Correct sentence They have been working on this project for four months.
Examiner's Trap Option C is wrong because of since, and B lacks the article: it should be 'for the past four months'.
Source: SSC CGL 2026 · 01 Oct 2026 · Shift I। Solution: Prashant Sir, Ramban।Source: SSC CGL 2026 · 01 Oct 2026 · Shift I. Solution by Prashant Sir, from Ramban.