1. cut my hair -- my hair cut
2. working-- been working
3.haven't-- hasn't
4.eat--ate

1. I just have cut my hair.
I just cut my hair.
2. She hasn't working as a teacher for almost 5 years.
She hasn't been working as a teacher for almost 5 years.
3. The lesson haven't started yet.
The lesson hasn't started yet.
4. Has the cat eat yet?
Has the cat eaten yet?
5. Has Jack finished the project already?
Has Jack already finished the project?
6. He has been at his computer for 7 o'clock.
He has been at his computer since 7 o'clock.
7. She hasn't received any good news since a long time.
She hasn't received any good news for a long time.
8. My father hasn't played any sport for last year.
 My father hasn't played any sport for the last year.

1. I just have cut my hair.
>  have just
2. She hasn't working as a teacher for almost 5 years.
> work
3. The lesson haven't started yet.
>  hasn't
4. Has the cat eat yet
> eaten
5. Has Jack finished the project already?
already finished

1. just have=> have just
2. working => work
3. haven't => hasn't
4. eat => eats
6. for => since
7. since => for
8. bỏ any