1)Hockey in winter.a) was played b) are played c) is

1)Hockey in winter.
a) was played b) are played c) is played
2) You consult a doctor.
a) must b) have to c) should
3)She was carefully ..... the map.
a) studying b) learning c) teaching
4)In many countries, men do military service.
a) should b) must c) have to