[dbshapco]

This seems to weaken the captcha for bots, since a simple Google search for (for instance) 'do you know we are going' completes the sentence. No need to defeat the obsfucated OCR test.

If the goal is to keep out some idiots (since these tests will admit 33-50% of idiots who can at least complete the OCR test but answer the question randomly) but permit moderately sophisticated bots, mission accomplished.

Providing more context to the captcha solution in general strikes me as helping the bots, even if it confounds idiots.