To “catch on” means ___.
a. to understand
b. to be punished
c. to grab something
If vs. WhetherDo Vs. DoesWhen vs. While
Next quiz: Grammar
Are you looking foward to _____________ in this class?
How to use : Read the question carefully, then select one of the answers button.
Tips : If this page always shows the same questions, make sure you correct the question first by pressing the "check answer" button.