He is accustomed ________ hot weather.
He is accustomed ________ hot weather.
Explanation
The phrase accustomed ended with “To” and is followed by “ing” form of a verb.
Accustomed to something means کسی چیز کا عادی ہونا
He is accustomed to hot weather means وہ گرم موسم کا عادی ہے۔