紧急求助：求英语高手帮我翻译一些句子啊？

1,Only in this way, can we catch up with the world's advanced levels in science technology.
2,We congratulate him on passing entrance examination successfully.
3,We want to make it clear to the public that the work of cleaners is necessary.
4,Chinese sociaty has changed a lot with the rise of super market and shopping centre.
5,The reason why we decided to put off the Sport Meeting is that we haven't made full preparation for it.

Only in this way can we catch up with the world's advanced levels in science and technology.
We congratulated the he passed the entrance exam.
We want to make it clear to the public that, cleaners work be missing
Shopping center with the supermarket and appear, Chinese society has changed significantly
We decided to put off the sports meet is the reason we are not ready.