Мой брат пишет бабушке чаще,чем я

Мой брат пишет бабушке чаще,чем я

Результаты (английский) 1:

My brother writes to my grandmother more often than I do.

Результаты (английский) 2:

My brother writes to his grandmother more often than I do.

Результаты (английский) 3:

My brother wrote more to my grandmother than I did,