Need help regarding how to handle SC and RC questions

Hello, Even though I score in the 680 to 720 range on my practice tests (7 from Veritas and 5 from Kaplan) my quant score is always 50 or 51 while my verbal is much lower, barely shy of 40 at best. I do well on RC and SC questions in my native language but when in English, I struggle on them. I have...