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.
Fact
The reason why milk is white is because it contains a protein called Casein, which is white. Milk also contains fat, which is also white .. More >>