There is a difference between the older exams and the new one:
no longer you have to choose the right answer to a multiple choice question,
but you do have to choose the correct grammatical structures from your own mind to convey your ideas effectively and clearly, in speech and writing.

Studying Grammar
1. At first you should test your grammar through any test to define what you know well and what you should review or learn.

2. Having identified a difficult area of grammar, select reliable materials (books, CDs etc.) to study. Better is to study books written in simple words that explain the material clearly.

3. Firstly, read and understand the rules for the grammatical structure you’ve chosen to learn. Make a brief note of the rules in your diary. Pay attention to examples and exclusions.

4. Complete one of the exercises. Leave any questions that you cannot answer.

5. Look into the Answer Key at the back of the book or in the Teacher’s Book. Check your answers; analyze mistakes and points you couldn’t understand before.

6. Choose some more exercises to practise the same grammatical structure. Always refer back to the rules while working through the exercise.

7. Write down any sentences that clearly demonstrate the use of the grammatical structure. Try to understand and remember them.

8. Having understood how the grammatical structure is used, refer to a reading text (book, magazine, newspaper) and find examples of the structure in a real piece of writing.

9. Revise the grammatical structure frequently for 1-2 weeks. Try to use it correctly while speaking and writing.

Be critical to your grammar - you cannot improve unless you know where the problem lies.