GMAT Club tests - strong quantitative, verbal could be better

I have been using the GMAT Club tests and find the quantitative questions excellent and great practice. The explanations are also excellent and they seem to relate to actual GMAT tests quite well.

However, the verbal questions often seem slightly incorrect. Furthermore, in the explanations it is sometimes "agreed" by some people that the question or answer has an error, however it does not seem to be corrected.

Based on this, I highly recommend the GMAT Club tests for their quantitative questions but I use other material for the verbal part.

I am taking the GMAT next week, so I will soon be able to see how the test scores match to the real score.