Choose one sentence from (a), (b), (c), in which forms of the Passive Voice correspond to those in the Active Voice: 1. The doctor diagnosed appendicitis. a) Appendicitis was diagnosed, b) Appendicitis had been diagnosed c) Appendicitis were diagnosed 2. We examined the tissue under the microscope. a) The tissue are under the microscope b) The tissue had been examined under the microscope, c) The tissue was examined under the microscope 3. They for the doctor. doctor was sent. b) The doctor was sent for. c) The doctor is sent for 4. The Inboratory assistant has just weighed all the substances a) All the substances have just been weighed by the laboratory b) All the subsitances has just been weight by the laboratory assistant. c) All the substances have just weighed by the laboratory assistant.