GMAT club test & quizes

I was introduced to GMAT club by my friend.After that I became a fan of this club.About the GMAT club test I want to say that quanta part is excellent.Though i did not appear for the official GMAT exam yet, I feel that the standard of the quanta question is high.The size of the question pool is also very large.From here I was introduced to many new formulas & shortcuts...thanks to the explanation given by Bunuel.For the verbal part I found one drawback is that the small size of the question pool.As a non native speaker,improvement in verbal part seems to be difficult.So I request BB to add more verbal questions in the test/quiz series. Lastly, thank you to give us such a wonderful test series which is almost the replica of real GMAT exam.