7. раскройте скобки, употребляя модальные глаголы и их эквиваленты в соответствующем времени. 1. i (to have) to go on business very often. 2. we (must) discuss this material. 3. when i was a commercial director i (can) go abroad very often. 4. both public and private companies (must) have at least 2 members. 5. changes in taste and fashion (can) influence the demands for most consumer goods to some extend, but they are particularly important to producers of such things as clothing, furniture, footwear and domestic appliances.