ПОМОГИТЕ! 
Раскройте скобки, употребляя глагол во времени Past
Simple или Present Perfect, производя все необходимые изменения. 
1. We (to keep) a file of genuine signatures that you could refer to. 2. Henry Ford (to build) the largest industrial organization of the early 20th century and (to amass) a personal fortune of $ 1billion ($ 36 billion in today’s dollars)?
3. In we (to make) not him several short-term loans.   4. We already (to issue) her a passbook on her saving account? 5. They (to come) up with what seems to them to be a very attractive offer. 6. He already (to receive) his canceled checks?