Combine the following simple sentences into one sentence:
I appeared for the Combined Graduate Level Examination. I did not get my desired post. I have to appear for it again.
1
Not having got my desired post, I have to appear for the Combined Graduate Level Examination again.
2
Having not got my desired post, I have to appear for Combined Graduate Level Examination again.
3
Not getting my desired post, I had to appear for the Combined Graduate Level Examination again.
4
Not getting my desired post, I have to appear for the Combined Graduate Level Examination again.