Do you know the reason for his absence?
کیا آپ اس کی غیر موجودگی کی وجہ جانتے ہیں؟
"For" is used to indicate the cause or explanation of something, in this case, his absence.
He is responsible for the project's success.
وہ اس منصوبے کی کامیابی کا ذمہ دار ہے۔
The correct preposition used with "responsible" is "for."
It indicating the duty or accountability for something.
"You should be ashamed of lying"
تمہیں جھوٹ بولتے ہوئے شرم آنی چاہیے
OF is the proper way to express that someone should feel shame because of their action of lying.
In front of something means کسی چیز کے سامنے
Generally preposition in is used for months, years, centuries and long periods.
Liable for means responsible for
Liable for ذمہ دار قرار دینا
Liable to means entitled to.
Liable to مستحق
You are liable to fine means تم جرمانے کے مستحق ہو
"Our TV has not been working since last week."
"Since" is used to indicate the starting point of an action that continues to the present.
It was his father who led him to this job
یہ اس کے والد تھے جنہوں نے اسے اس کام تک پہنچایا
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"to" preposition is used here because they "identify a particular relationship between one person (father) and another(him)".
ND17-1-2023