Practice testing with immediate feedback and spaced repetition are two of the most effective study techniques. Quizlet and Memrise are free sites that make these easy. Click on the link below to generate a 20 question practice test.

Generate a Thai/English Vocabulary Quiz

Generate an English Only Quiz - Advanced Academic Vocabulary

Generate a Picture Quiz of Common Verbs

TOEIC Vocabulary

Also, check out these Memrise Vocabulary Lists.

Reference

Practice testing is one of the most effective study techniques, study says. (n.d.). Retrieved from https://www.ernweb.com/educational-research-articles/learning-techniques-effective-study/