I. Поставьте предложения в вопросительную и отрицательную формы. 1. The percentage of British exports in world trade

1. The percentage of British exports in world trade declined significantly. — Did the percentage of British exports in world trade decline significantly? — The percentage of British exports in world trade did not decline significantly.
2. Business transactions usually start with enquiries. — Do business transactions usually start with enquiries? — Business transactions usually do not start with enquiries.
3.  Investing in infrastructure for industry will encourage economic growth. — Will investing in infrastructure for industry encourage economic growth? — Investing in infrastructure for industry will not encourage economic growth.