английский язык. проверьте пожалуйста

[Meladi]

. Поставьте глаголы в нужном времени, употребив каждое из данных обстоятельств.
1. He (to go) on business to Paris (just, one of this days, last week, in two days, already, this month, the other day). 2. They (to sign) the contract with Black & Co (lately, today, a month ago, next week, the day after tomorrow). 3. We (to modify) our pumps (last year, this month, three months ago, recently, the next year).
         1. He has just gone on business to Paris.
             He goes on business to Paris one of this day.
               He went on business in Paris last week.
               He is going on business to Paris in two days,
               He has going already on business to Paris.
               He would go on business in Paris this month.
               He went the other day on business to Paris.
          2.  They lately signed the contract with Black & Co.
               They signed a contract with Black & Co today.
               They signed a contract with Black & Co a month ago.
               They will sign a contract with the Black & Co on next week.
               They must sign the contract with Black & Co  the day after   
               tomorrow.   
           3. We have modified our pumps last year.
               We modify our pumps this month.
               We three months ago modified our pumps.
               We modified recently our pumps.
                We modify our pumps the next year.