when we have to use since &for
with perfect continuous tenses :)
To use since/ for
I have been study English since 2010 (Since - To specify the year, month, day, hour ...) I have been study English for 3 years ( For - To specify how long you are doing this)
I hope you understand
you can refer to the post below:
How I write a sentence with preposition at the end?
Que est que l´elision la elision?
In polite structure change the sentence.
Find a word wich is similar in meaning to(i)deadly(ii)destructive
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