Выберите соответствующую форму инфинитива. английский.

1. The patient was known ...stool retention accompa­nied by nausea a month
before his present admission to the hospital. ( a) to have; b) to have had; c)
to be having)

2. Sensitivity to antibiotics was reported ...not only in this patient
but in all the other members of the family as well since their early age. ( a)
to be present; b) to have been present)

3. Prophylactic vaccination was found ...since no cases of hepatitis
were diagnosed after its admin­istration. ( a) to be effective; b) to have been
effective)

4. Skin irritation was revealed ...after each parenteral administration
of this preparation. ( a) to occur; b) to have occurred; c) to be occurring)