FILL IN THE FOLLOWING CONJUCTIONS IN THESE SENTENCES SUITABLY.

(as , as if , although , even if , even though)

1)I won't accept this job _ _ they offered me double the salary.

2)The teacher didn't give me full marks _ __there was no mistake in my answers.

3)We acted _ _ we had been directed.

4)He behaved _ __he were worried for his father.