Complete the sentences using the words in parentheses.
1. Animals.....should be trained ( huấn luyện )........(should / train) with a combination of firmness and affection.
2. Dogs are usually used to help people with disabilities but I have heard that other animals......can be used.......... (can / use) as well.
3. Gina’s dog.......might not be found..........(might / not / find) because it wasn’t wearing its dog tag with Gina’s
phone number on it.
4. With all the new technology that is available in medical science, why do animals still.......have to eb used.... (have to / use) for research?
5. I don’t believe that any animal......should be kept......(should / keep) in a cage(lồng ). That’s why I hate zoos.
6. The illegal hunting of wildlife....must be prevented.........(must / prevent) or else some important species will disappear.
7. Sang’s dog......could have been....... (could / be) better trained. It never obeys her.
8. A lot more.....could be done.......(could / do) to improve conservation efforts for chimpanzees.

1. should trained

2. can be used

3. might not be found

4. have to eb used

5.should be kept

8. could be done

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