Перепишите предложения, подчеркните сказуемое, опреде-лите его видо-временную форму, переведите на русский язык. 1. Agriculture supplies people with food products. 2. New methods of weed control have been used on this farm. 3. This crop variety was developed some years ago. 4. Next week our farm will be visited by a group of specialists in plant diseases. 5. The development of some crops is not influenced by the length of the day. 6. The United States export most of the corn produced. 7. The wheat plant is an annual.