Some concepts may be difficult to grasp chiefly because they may be unfamiliar or _____ideas, opinions which we already hold.

Yoursister_______tovisityouquiteofen,didn'tshe?

Did you attend the meeting yesterday ____ Mary talked a lot ?

It is obvious that this new rule is applicable to everyone without _____.

Rock: ______.

Sharon: Very well, and the experiment is nearly finished.