21. Верна ли грамматическая конструкция в данных предложениях? A) Have governments some ways of making sure that citizens obey the law? B) What are police forces use for?
• A — нет, B — нет
22. Верна ли грамматическая конструкция в данных предложениях? A) British and American English have lots of words which looks the same but have different meanings. B) Most of the differences between British English and American English are minor and are only concern with vocabulary, spelling and pronunciation.
• A — нет, B — нет
23. Even healthy people find it difficult to concentrate after hours of breathing less oxygen __________________ usual.
• than
24. Governments __________________ many ways of making sure that citizens obey the law.
• have
25. If I __________________ here, I would have come to see you.
• had been