Упражнение 2.Выберите сказуемое в предложении, определите его время и залог.

1. The researchers are conducting the tests of new devices in the laboratory now.
2. The tests of new devices are being conducted by the researches now.
3. The students have made experiments successfully.
4. We have been learning English for 2 years already.
5. The tools are made of steel.