Help подчеркните в них герундий, причастия и определите функции причастий (определение или обстоятельство). 1. all objects surrounding us are composed of different substances. 2. the steam locomotive invented by g.stephenson developed а low speed. 3. when placed in a strong magnetic field iron becomes magnetised. 4. when first proposed, the project for the moscow underground seemed unrealistic. 5. there are many ways of improving the model designed last year.