has been certificating

• present perfect progressive

  present perfect progressive

  Used to describe an action that began in the past, has continued continuously, and is still in progress.

  of certificate (3rd person singular).
  certificate

  noun

  a document serving as evidence or as written testimony, as of status, qualifications, privileges, or the truth of something.

Related Words

• affidavit
• authentication
• authorization
• certification
• coupon
• credential
• deed
• diploma
• documentation
• guarantee
• license
• paper
• permit
• receipt
• ticket
• voucher
• warrant
• warranty