为了维护司法权威，建立与完善社会诚信机制，全国法院已建立“失信者黑名单”制度。失信被执行人一旦被纳入“黑名单”，名单信息也会被纳入征信系统，将严重影响被执行人的生产和生活。这启示我们  （　　）

①要信守承诺，做一个负责任的公民         ②对人守信，对事负责是诚信做人的基本要求

③不负责任，就要承担相应的后果            ④不遵守社会规则的行为，就会受到法律的制裁

    I went to Australia for summer holiday with my parents last year. I was so excited about the 1.

    We did many things there. The first day, we 2 Sydney. We had some 3food for lunch there. After lunch，we went to a big 4 . We saw tigers and koalas. The animals weren't 5 of people.

    6that, we had a walk and we 7 at a restaurant. We went back to the 8 to rest at 9: 00 in the evening. I was very 9. But I really 10 myself. I hope to go there again.