对以下三句话进行情感分析，输出它们各自的情感类别。


“We had a great time at the party last night.”
“I am feeling sad because my dog passed away.”
“I can't wait to see my best friend who is coming to visit me next week.”
第一句话情感类别是：积极/快乐
第二句话情感类别是：悲伤
第三句话情感类别是：期待/兴奋