Помогите по английскому!!!
Раскройте скобки, употребляя глаголы в Active или Passive Voice. Переведите предложения.

1. These data (are often referred to/refer to).
2. This phenomenon (will be spoken about/will speak).
3. This method (was used/ used) often because it saved time.
4. The research workers (brought/was brought) many new devices to their laboratory last month.
5. The students ( will show/will be shown) well-equipped lecture halls to their foreign students.
6. Workers (are building/are being built) a new office of a well-known company at present.