Are your sister a student?改错怎么改?

Are your sister a student?改错怎么改? Are your uncle a student?(改错) 改错：she sister is a student Are she your sister?哪里错了,该怎么改 英语改错：Are those your sister. You are a student.Is( ) sister a student,too? 1 these are your sister 改成复数怎么改 2 they are my familys Are your English teacher a women怎么改错 改错-Is your brother and sister workers? Yes,they are 改错.are your sister's names lily and lucy 改错-is your brother and sister workers?yes,they are My sister and I are a student 这句话对面