The key answer of exercise 2
The key to exercise solutions in chapter CLIL 1 for the textbook Wider World 4 - Student's Book with authors Suzanne Gaynor, Kathryn Alevizos and Carolyn Barraclough from Pearson Education
Question
The process in the picture is called fracking. Choose the correct answer. Then read the article quickly and check your answers to Exercise 1.
Answer
b