Oxygen? Or air in general.
I need the "following, but it's probably something like, "if it seems too good to be true; it probably is."
Accepted because accepted 1 ends in ed and 2 it is following a noun
<span>B. The Readers' Guide is a basic index, while the other resources are full databases allowing access to actual articles.
The Reader's Guide only dates back to 1983 and only contains works that are considered popular. the total number of works within the reader's guide numbers only slightly higher than 450.</span>