His father is working in the company since 1990. - His father is working in the company since 1990. - Choose the meaning closest to the idioms written below and underlined. English Grammar in hindi, Idioms question answers in hindi pdf questions in hindi, Know About English Grammar online test English Grammar notes in hindi quiz book
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In this question correct answer is 3. Because his father is singular noun and after singular noun you should use has been.
Has been working
But his father is singular so it must be Has been option c
Has been working in is corre t because in is father is singular