Subject- verb agreement

Front

They plays in the park

Back

Change plays to play

Front

He plays in the park.

Back

Make no change.

Front

She walk to the city.

Back

Change walk to walks.

Front

I sings on the beach

Back

Change sings to sing

Front

It sing a song.

Back

Change sing to sings.

Front

They runs a lap around the city.

Back

Change runs to run.