We are thirteen years old 反义疑问句

We are thirteen years old 反义疑问句 We are twelve years old 改为一般疑问句 She is thirteen years old 改为一般疑问句 I'm thirteen years old. 改成一般疑问句 I am thirteen years old （改为一般疑问句） Mary,are you thirteen years old?（做否定回答） They are ( ) students.A.thirteen years old B.thirteen-year o My sister is thirteen years old.(提问thirteen years old) tonight we are __to a thirteen-year-old boy. She is thirteen years old.对thirteen years 提问 thirteen years old 与 thirteen -year-old的区别 thirteen years old与thirteen-year-old的区别