Continuing, repeating and starting again: Exercise 1

The sentences below all contain a word or expression in bold referring to continuing something, repeating something, or starting something again. In some of the sentences, the word has been used correctly. In others, the wrong word has been used.
Identify which sentences are correct and which are wrong. Replace the words in the wrong sentences with a correct word (leave blank if the words right). You will find these words in the other wrong sentences.

1. Despite repeated warnings, you have failed to show any improvement in your work or your attitude.
2. The production line has been temporarily shut down following a report from the Health and Safety officer, but we hope to ongoing production as soon as possible.
3. The meeting will break for lunch at half past twelve, and restart at two.
4. I think that we have talked enough about planning permission for the new office. I would like to reopen to the previous subject of overdue payments, if that's all right?
5. We like to continuous good relations with our customers, and take any complaints very seriously indeed.
6. The computer crashed on Monday, then again on Wednesday and once more on Friday. If it gives us persevere problems, I suggest we get a new one.
7. A regular, repeated tone means that the person you are trying to call is already on the phone, but a / an maintain tone means that the number you are trying to call is not available.
8. We are worried that work on the new warehouse will progress too slowly unless we offer the contractors more incentives.
9. We understand that you are supposed to retire next month, but we would be delighted if you would carry on working for us after that on a part-time basis.
10. The economic climate is very bad at the moment, and we are losing over $10,000 a month as a result, but I suggest we steady and hope that recovery comes soon.
11. Unfortunately, the latest company report will persist the rumor that we are going to close down some departments.
12. The managing director called, and says he wants us to press on with the proposed changes to the distribution scheme despite opposition from the marketing department.
13. The hotel will be closed for renovations between October 15 and November 20, but will revert in time for the Thanksgiving holiday.
14. The Directors have said they are delighted with the commitment you have shown the company this year, and hope that you will be able to perpetuate the good work.
15. If you continual in coming late and taking unauthorized breaks, we will have no option but to dismiss you from your post.
16. Staff absenteeism is a / an keep up problem which we need to resolve as soon as possible.
17. The constant noise from the highway outside the office makes it very difficult to concentrate.
18. As long as the negotiations continue to proceed well, we hope to sign the contract by the end of the month.
19. Unemployment figures have fallen by about 2% every year for the last ten years. It is hoped that this resume decrease will continue.
20. If the government agrees to pursue its current policy of reducing taxation, we can afford to invest more in developing our technology.