题目内容
() 3. Welcome to my farm.
() 4. She's my sister. She's Helen.
3. S(3. Welcome to my farm.)
4. D(4. She's my sister. She's ten.)
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题目内容
() 3. Welcome to my farm.
() 4. She's my sister. She's Helen.
3. S(3. Welcome to my farm.)
4. D(4. She's my sister. She's ten.)