Choose the correct preposition.
1 Bill got three job offers last week. He must have a knack for/at interviews!
2 A defensive posture can have a huge impact on/to the outcome of your interview. 3 A CV gives potential employers an insight into/for the skills of an applicant.
4 Qualified, confident candidates are always under/in demand in the job market.
5 To appear professional, one must maintain control of/on emotional impulses at all times.​