工作态度大致可以分为：积极与消极，或危险与安全的工作态度；请分辨下列哪些是积极的，哪些是消极的工作态度？（）
①It is an important work.
②It is my duty.
③I think it is better.
④I have no a good idea.
⑤Try again.
⑥Others should be responsible.