some doctors help people.other help animals.doctors that help animals are called vets.people take their pets to go to se

some doctors help people.other help animals.doctors that help animals are called vets.people take their pets to go to see the vet when the pets are ill .vet can help _____them well.helping a pet can be_____work .the pet can't tell the doctor ______part of its body hurts.the vet will _______over the pet.then the vet will give the pet some medicines.
pets also should go to see the vet when they are ________.healthy pets need check-up is good for the pet's health.
五个空如何填?