1 Is he your teacher
2 They are Li Ping's and his sisters
3 There are four boxes on the desk .
4 Bill is ( / ) English .He is not ( a ) Chinese boy .
加油!不明白再问!the slim girl is fat and tall.改为一般疑问句，作肯定，否定回答。_____the slim girl fat and tall？Is the slim girl fat and tall ?Yes, she is .No, she isn't .