Помогите пожалуйста, очень надо. Определите в каждом из предложений видовременную форму и залог глагола-сказуемого.
1. Before the experiment the substances are mixed in a large cup.
2.The latest surgical instruments were used during this unique operation.
3.The new engine is being tested in the laboratory.
4. Its a long time since I have visited that town.
5. The street has been widened.
6. I have not made my plants yet.

1. are mixed - настоящее простое, пассивный залог (present simple, passive voice) 2. were used - прошедшее простое, пассивный залог (past simple, passive voice)3. is being tested - настоящее длительное, пассивный залог (present continuous, passive voice)4. is - настоящее простое (present simple), have visited - настоящее завершённое, залог активный (present perfect, active voice)5. has been widened - настоящее завершённое, пассивный залог (present perfect, passive voice)6. have not made - настоящее завершённое, активный залог (present perfect, active voice)