ESL-EFL Test - 138
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.
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1. ESL-EFL Test - 139
2. ESL-EFL Test - 140
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Invention
Invention : bomb, atomic
Year : 1945
Inventor : j. robert oppenheimer, et al.
Country : us.
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