Exercise 4: Choose the correct answer. 16. We on the Moon in 2050. B. have lived Japan three times. A. might live 17.My father A. visit 18. B. will visit C. visited watch TV too much. It's not good for your eyes. B. Don't C. Please A. Do 19.Mary could do sums A. at B. from 20.If we walk and cycle more, there C. live the age of 7. C. in less air pollution. D. are living D. has visited D. Can't D. to
