1.are→is
2. what→that或去掉
3. founded→found
4. make→made
5. another→others
6. animal→animals
7. used them去掉them
8. by the hand去掉 the
9. his ancestors→their
10. did them去掉them
1.are→is
2. what→that或去掉
3. founded→found
4. make→made
5. another→others
6. animal→animals
7. used them去掉them
8. by the hand去掉 the
9. his ancestors→their
10. did them去掉them