题目：
Form the sentences. 连词成句。
1. same, they, the, are
2. a, tail, a, cat, and, has, fur
3. different, are, they
4. wings, a, bird, and, has, feathers
答案：
1. They are the same.
2. A cat has fur and a tail.
3. They are different.
4. A bird has feathers and wings.
