Нужно выбрать верную форму инфинитива 1. A new discovery must … by a patent. a) be protected b) have been protected c)

1. A new discovery must be protected by a patent. 2. You can\'t read every contract you come across, but for the most important ones — employment, living arrangements, even medical treatment, be sure to have an attorney review it before signing. 3. The policeman asked me to be specific, because interpreting unclear language could lead to a lawsuit. 4. There will be attempts to prevent fraudulent trading. 5. To make the same mistake twice was unforgivable. 6. It occurred to me that he was trying to conceal something. 7. No one would rather leave this building without the permission of the police.