1. left at eight o'clock. (subject) (Correct)(Incorrect)
The plane left at eight o'clock. (subject) (Correct)
2. Peter's work at a large bank. (subject) (Correct)(Incorrect)
Peter's daughters work at a large bank. (subject) (Correct)
3. There was in the room. (subject) (Correct)(Incorrect)
There was a boy in the room. (subject) (Correct)
4. He very busy lately. (predicate) (Correct)(Incorrect)
He has been very busy lately. (predicate) (Correct)
5. Jim and Mary in a nice house with a large yard. (predicate) (Correct)(Incorrect)
Jim and Mary lived in a nice house with a large yard. (predicate) (Correct)
6. John is a car mechanic, and Mike repairs . (object) (Correct)(Incorrect)
John is a car mechanic, and Mike repairs refrigerators. (object) (Correct)
7. He will speak . (object) (Correct)(Incorrect)
He will speak to the manager. (object) (Correct)
8. She was wearing a summer dress and open-toe sandals. (attribute) (Correct)(Incorrect)
She was wearing a light summer dress and open-toe sandals. (attribute) (Correct)
9. I saw something in the kitchen. Is it for me? (attribute) (Correct)(Incorrect)
I saw something interesting in the kitchen. Is it for me? (attribute) (Correct)
10. I'll ask them . (adverbial modifier) (Correct)(Incorrect)
I'll ask them after dinner. (adverbial modifier) (Correct)