All the links of page usingenglish.com/comprehension no open, show for me, white page.
This link open for you: usingenglish.com/comprehension/preliminary+english+test.html
Hi there, and thanks for letting us know of the issue with the comprehension area. The problem has been fixed and all of the pages should now work correctly.
I'm not a teacher, so please consider any advice I give in that context.