1.I think you need to have a h(istory) class.You know nothing about the past.2.Personal c(omputers) were invented in 1967.
3.A friend of him (he) has been a lawyer ,while he is still in the law school.
【句型转换,一空一词】
4.My parents visited grandma twice a week.(同义句装换)
My parents ( used ) ( to ) ( visit ) ( my ) grandma twice a week.
5.I am really a beautiful girl,( ain't ) ( I [反义疑问句]