Put the in the box into the Present or Past Simple

Put the in the box into the Present or Past Simple Passive.
1) The c hild___________ ( to take ) to the hospital yesterday.
2) Allergy_____________ ( to cause ) by pollen, animal dander and other things.
3) When _______ penicillin ________ ( to discover )?
4) Where ________ people _________ ( to operate ) on nowadays?
5) The patients ________________________ ( to examine ) half an hour ago.
6) A new surgeon __________________ ( to introduce ) to them last week.