The passive: present simple- exercise

Put the verb in the correct form


1- Lunch _________(serve) in the hotel at one o´clock every day.
2- The front door _________(lock) at midnight every night.
3- Animals that __________(keep) in cages often look sad.
4- A lot of plants _________(use) to make medicines these days.
5- These photos __________(take) with my new camera.