I agree with Tatiana. We've worked with scores of non-native speakers, and in some ways you have an advantage - - you may (or may not) know several languages and therefore have an unbiased ear to spoken vs. written english - - you can study the rules without as much confusion. The rules are the rules. It is non-negotiable. Plus, you likely have studied grammar in other languages and can compare it to English.

There is no doubt a challenge but it can be met.

When Ossa, my colleage, spoke about approaching the math like a business person, I wanted to elaborate.

We view the math on the test as metaphoric. Not always, but sometimes. This means to do the math, you need to have a few things in mind.

1) the math really is 7th, 8th and 9th grade math (for the most part).
2) the math itself is easy, its just how its asked that makes it difficult
3) the math is testing how agressive, focused, out-of-the-box thinking, conservative, thoughtful etc. where you get things correct/incorrect, how you get them correct/incorrect, say as much about what you know as how you think...and this is a thinking test.
4) The more real questions you work with the better your 'gut' gets to recognizing what a right answer looks, and feels like.
5) don't underestimate working backwards to understand how a math question really works.

If you figure out short cuts, see if there are any complications to them.

Believe you can do it, and you can.

Yes. You Can.

Good Luck!