Which word is different? a) behind b) though c) across d) through

Which word is different? a) behind b) though c) across d) through behind - позади, сзади; across - через; through - через, сквозь - это предлоги места, ставятся перед существительным лишнее слово: though - хотя

1. john often goes to the theatre on sundays.

2. they usually go to the park twice a week.

3. how often do you play baseball?