Exercise A
Number 6
Q: In the past a career in politics was not considered acceptable in some circles
A: Correct, because the sentences already have a subject and object
The object: a career
The subject : was not considered
Exercise B
Number 2
Q: at long last, the chief executive officer, has decided to step down
A: Incorrect, because there is no subject in the sentences
Appositive : the chief
Verb : has decided
