下列句子中各有一处错误，找出并改正。
（____） 1. They like grasses. ____________
A B C
（____） 2. He has sheeps. ___________
A B C
（____） 3. These are my cow. _______________
A B C D
（____） 4. At his farm he has four horses. ______________
A B C D
（____） 5. He have five ducks. ______________
A B C D
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