TOPIC: Correct or not?

Can we write
Sentence 1 - “If you do have any good idea, please let us know....”
Sentence 2 - “I'm glad to announce that our company web site has now make available for our customer....
Sentence 3 - “Our meeting will be held on next Monday, please confirm your availability...”

Sentence 1 - “If you do have any good idea, please let us know....”
This sentence is fine except that it should be “any good ideas”.
Sentence 2 - “I'm glad to announce that our company web site has now make available for our customer....
This sentence has four mistakes. It should be “... has now BEEN MADE AVAILABLE TO our CUSTOMERS”
Sentence 3 - “Our meeting will be held on next Monday, please confirm your availability...”
This sentence has one mistake. It should be “... held next Monday”

jockeyclub wrote:
I think the underlined part of the sentence 2 should be revised to our company's web site . Am I right?

Sentence 1 'If you have ang good ideas please let us know'
Sentence 2 'I'm glad to announce that our company web site is now available for our customers....
Sentence 3 - Jockey Club is correct