運動WORD PUZZLE問題

Please help me solve these problem below.

1.What is 'one of two posts that make a football goal?
2.What is 'special clothes that people wear when playing sports or exercising'?
3.What is 'a sport where people slide on ice wearing special skates'?
4.What is 'two or more people who are on the same side in a match'?

Thank you!