had been typewriting

• past perfect progressive

  past perfect progressive

  Used to describe an action that was ongoing continuously in the past up until another past event interrupted it.

  of typewrite.
  typewrite

  verb (used with or without object)

  to write by means of a typewriter; type.

Related Words

• address
• compose
• create
• draft
• note
• pen
• print
• record
• rewrite
• scrawl
• scribble
• sign
• tell