My answer is a. He has already been to the asteroid
Answer:
In most cases - it is not possible (or desirable), & in few cases cases, it might be possible (or desirable).
Explanation:
Profession is an occupation based on proper formal qualification, training. Eg : Doctors, Lawyers.
They require specialised knowledge (accredited) to practice as a professional. So, involvement in multiple professions is not possible (desirable) in most cases, as it hinders focus & specialised competence (expertise) in single field.
However, in some cases, it might be possible (desirable) if the fields are related. And it also might be need of exposure for the professional. For eg - An economist might be economic consultant & a professional teacher in an education organisation at the same time.
a.)mailed a letter to his father
Answer:
B: The novel, a love story set in ancient Egypt, took me two weeks to finish.
Explanation:
An appositive phrase is a noun or noun phrase that renames the noun next to it. For example, if you said, "The boy raced ahead to the finish line," adding an appositive could result in "The boy, an avid sprinter, raced ahead to the finish line.
I'm not understanding the question, friend