Preparing for Eiken

I'm preparing for an English test, Eiken pre-1st grade. I've never taken the test, so I bought a workbook for the test that I will able to get used to the form of the test. 

Lack of vocabulary is a big problem for me. There are many words in the book I've never seen. 

Another problem is that I don't read articles carefully. I don't need to be hurry. There would be plenty of time for solving problems. 

Reading these articles for workbook's problem, I've found there are many interesting topics in the book. I didn't really like preparing for English tests, but not so bad.