исправьте неправильные предложения? английский язык, не во всех предложениях есть ошибки

Question

1.That’s ridiculous – I’m not believing it! 
2. That’s ridiculous – I’m not doing business with them again! 
3. I’m sorry, I’m not following what you’re saying. 
4. I’m sorry, I’m not understanding what you’re saying. 
5. This building is containing all the printing machines. 
6. This building is getting very old – soon we’ll have to move.

Алексей Ш · Accepted Answer

1.That’s ridiculous – I DON"T BELIEVE IT 
2. That’s ridiculous – I’m not doing business with them again! - CORRECT 
3. I’m sorry, I’m not following what you’re saying.- CORRECT 
4. I’m sorry, I DON"T UNDERSTAND what you’re saying. 
5. This building CONTAINS all the printing machines. 
6. This building is getting very old – soon we’ll have to move. _CORRECT

Макс Боба · Answer

http://otvet.mail.ru/question/89807686