have been sieving

• 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 sieve.
  sieve

  noun

  an instrument with a meshed or perforated bottom, used for separating coarse from fine parts of loose matter, for straining liquids, etc., especially one with a circular frame and fine meshes or perforations.

Related Words

• colander