Word Elements from Chapter VIII

For each word element, choose the correct entry from the drop-down menu. As an alternative to scrolling through the menu for a specific answer, after opening the menu you may type in the first letter(s) of an answer to find it immediately. (If you are looking for a verbal element, remember to begin by typing "to.") You may cycle through the drop-down menus by using the TAB key. After making your selections, click "Check Answers" to see the results. Continue this process until all answers are correct.

NB: If your instructor requires proof that you have completed this exercise, you may click the button above to get a timestamp and then take a screenshot of the page showing both the timestamp and the confirmation that all answers are correct.
aper-, apert-
av-
crem-, cremat-
dilat-
don-, donat-
firm-
habit-, habitat-
i-, it-
lubric-, lubricat-
moll-
oper-, operat-
ori-, ort-
oscill-, oscillat-
oss-
pati-, pass-
pend-, pens-
pil-
pred-, predat-
reg- (-rig-), rect-
rod-, ros-
spir-, spirat-
string-, strict-
tribu-, tribut-
vit-, viv-