Quizzes, tests, exercises and puzzles for English as a Second Language (ESL), English as a foreign language (EFL), Teaching EFL (TEFL), Test of EFL (TOEFL), English for speakers of other languages (ESOL), Teaching ESOL (TESOL), TOEIC.
Never clean the touch screen with strong chemicals and detergents. Standard glass cleaners can be used for cleaning the touch screen but dont use the solutions which contains Ammonia. Dont spray the solution directly to the screen. Always apply the solution with a soft cloth.