I.

1). Play => played

(+) My brother has played basketball with his friends twice a week

(-) My brother has not played basketball with his friends twice a week

(?) has My brother played basketball with his friends twice a week?

2). Marry => married

(+) My mother and my father have married for nearly fifty years

(-) My mother and my father have not married for nearly fifty years

(?) have My mother and my father married for nearly fifty years