a. Twenty years ago, people were able to access the internet on their phones
B. Yesterday my mom twisted her ankle so she wasn’t able to drive me home after school
C. Hopefully Sam will pass his exams and be able to go to university next year
D. My friends have just had a bike accident: thanks to their mobile phones they were able to call for help
E.I’m learning Chinese : next year I will be able to speak Chinese fluently
F. Andrew is lucky, he is able to play video games all night long!