You can learn basic vocabulary and expressions in Professor Oh Dong-hoon's [Ai Verification Vocabulary 900]! Learn smart words from the root word analysis to synonyms and memorize them efficiently!

■ 50 Day
The 900 words in the book consist of 50 Day! You can study according to the amount of daily study given.
Repeatedly reading the pronunciation, meaning, synonyms, and example sentences of the English language, you can study conveniently and efficiently.

■ Speed ​​Boca
You can memorize quickly and conveniently with a flash card.

■ Flip Card
You can learn English words and meanings with a 1: 1 flip card.

■ Boca test
You can learn words through the etymology.

■ Custom Wordbook
It is possible to collect the words that you do not know in your own vocabulary and repeat learning.


Memorize fast and effective civil servant English words anytime, anywhere!
Download now and start learning English words right ~!


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02-3489-9489

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02-2274-6419