I still have a few other sentences to check. Thank you, Writeacher.

1) " I've spent all my pocket money on that book!" (he/exclaaim)
He exclaimed that he had spent all his pocket money on that book.
2) "I'm going on a school trip tomorrow" (he/inform/his mum).
He informed his mum that he was going on a school trip the next day.
3) "I've been waiting for the bus for more than (longer than?) an hour." (he/say) . He said that he had been waiting for the bus for longer than an hour.
4) "I'll help you." (my mum/tell/Peter)
My mum told Peter that she would help him.
5) I need to find a further example of zero conditional (like the sentence:
If the machine stops, you press the button).Can you help me find another example???

http://en.wikipedia.org/wiki/Conditional_sentence

There are several example sentences in here.

Sure! Let me help you find another example of a zero conditional sentence.

A zero conditional sentence is used to express a general truth or a fact that is always true. It consists of two clauses: an if-clause (introducing the condition) and a main clause (expressing the result).

Here's an example for you:
- "If you heat ice, it melts."

In this example, the condition is "if you heat ice" and the result is "it melts". The zero conditional is used because it states a fact that is always true - heating ice will always result in it melting.

I hope this example helps you understand the concept of zero conditional sentences! If you have any more questions or need further assistance, feel free to ask.