fill in the gaps with one of the words from the

Fill in the gaps with one of the words from the box in the proper from.
box: consider research examine
1. Animals are turned into drug addicts and alcoholics. They are force-fed sweets in the course of dental _______ .
2. First i took the temperature and then i _______ the animals foot and claws. These were normal.
3. It is important to ________ carefully the reasons for choosing an exotic pet and learn as much as possible about the pet before bringing it home.