. When Since/For is used in Past Perfect Continuous Tense ?
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. When Since/For is used in Past Perfect Continuous Tense ?
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Answer:
When, for, since, and before are words that you may
Explanation:
The program that was terminated had been working well since 1945.
Answer:
Since is used for marking the year.
Ex:Virat had been palying since 2009
For is used for to respect time
Ex:She had been reading for two hours