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۔