Correct option is A
The correct substitution of the highlighted words is (a)
for 10 years.
Explanation: With
present perfect (continuous) forms like “has been,” we use
for + a period of time (duration) and
since + a point in time (starting point). “10 years” is a
duration, so “for 10 years” is correct. “Since 10 years” is incorrect because
since cannot be followed by a bare duration; it must take a specific time-point such as “since 2015” or “since last January.”
Grammatical rule used:
·
for + duration (e.g., for two hours, for three days, for 10 years)
·
since + starting point (e.g., since Monday, since 2015, since childhood)
·
Example: She
has lived in Delhi
for five years. / She
has lived in Delhi
since 2020.
·
Information booster: In patterns like “It’s been ten years
since…,”
since is correct because it introduces a
clause with a time-point: “It’s been ten years
since she started teaching,” but when the time expression stands alone as a
duration, use
for.
English
80 Questions
160 Marks
60 Mins
