Подчеркните сказуемое, укажите видовременную форму и залог 1. Numerous actions have been undertaken to encourage the

1. Numerous actions have been undertaken to encourage the development of small firms. Present Perfect Passive Voice.2. Most important works on fields are being done by machines now. Present Continuous Passive Voice.3. Tariffs on oil exports will have been raised by the end of the year. Future Perfect Passive Voice.4. New methods of management will be studied by economists. Future Simple Passive Voice.