undertook
  (vbl.)undertake的過去式
  Un·der·take v. t. [imp. Undertook p. p. Undertaken p. pr. & vb. n. Undertaking.]
  1. To take upon one's self; to engage in; to enter upon; to take in hand; to begin to perform; to set about; to attempt.
  To second, or oppose, or undertake
  The perilous attempt.   --Milton.
  2. Specifically, to take upon one's self solemnly or expressly; to lay one's self under obligation, or to enter into stipulations, to perform or to execute; to covenant; to contract.
     I 'll undertake to land them on our coast.   --Shak.
  3. Hence, to guarantee; to promise; to affirm.
     And he was not right fat, I undertake.   --Dryden.
  And those two counties I will undertake
  Your grace shall well and quietly enjoiy.   --Shak.
     I dare undertake they will not lose their labor.   --Woodward.
  4. To assume, as a character. [Obs.]
  5. To engage with; to attack. [Obs.]
     It is not fit your lordship should undertake every companion that you give offense to.   --Shak.
  6. To have knowledge of; to hear. [Obs.]
  7. To take or have the charge of. [Obs.] “Who undertakes you to your end.”
     Keep well those that ye undertake.   --Chaucer.
  Un·der·took imp. of Undertake.
  ◄ ►
  undertake
       v 1: enter upon an activity or enterprise [syn: set about, attempt]
       2: accept as a challenge; "I'll tackle this difficult task"
          [syn: tackle, take on]
       3: promise to do or accomplish; "guarantee to free the
          prisoners" [syn: guarantee]
       4: enter into a contractual arrangement [syn: contract]
       5: accept as a charge [syn: take in charge]
       [also: undertook, undertaken]