Подскажите пожалкйста какую форму глагола поставить, ООЧЕНЬЬ СРОЧНОО НУЖНО! Dear Sir…

Подскажите пожалкйста какую форму глагола поставить, ООЧЕНЬЬ СРОЧНОО НУЖНО! Dear Sir or Madam, I (1) am writing/write in connection with theadvertisement which (2) has appeared/appeared on 3 December. I originally (3) studied /have studied mechanical engineering at university. Now I (4) have completed/completed a postgraduate degree in business and administration. I (5) already worked / have already worked for several companies on a temporary basis. In my first job I (6) have been/ was responsible for marketing. The last job I (7) have applied/ applied for required applicants to speak some Japanese. I hope that my application (8) will be consider/ will consider favorably.