8. Choose the correct answers to complete the text. 1) ____ your phone run out of battery when you don’t have a charger? This has 2) ____ to many of us. In China, this isn’t a problem on their high-tech trains – they 3) ____ introduced wireless charging, so you can charge your phone while you are travelling; they have used this technology 4) ____ the last two years, and it’s very popular. Have you ever 5) ____ your train ticket? In Japan, they have 6) ____ a new system of tickets so that a camera ‘reads’ your face and you don’t need to carry a ticket. They have been testing the new system 7) ____ the end of 2019 and hope it will be ready to use to all train stations soon. Options: 1) a Have; b Hasn’t; c Had; d Has. 2) a happened; b happens; c happen; d had. 3) a have; b has; c had; d did. 4) a of; b since; c for; d by. 5) a forget; b forgot; c forgotten; d forgets. 6) a develops; b develop; c develops; d developed. 7) a for; b since; c then; d from.

1. a Have
2. a happened
3. a have
4. c for
5. c forgotten
6. d developed
7. b since

Completed text: Have your phone run out of battery when you don’t have a charger? This has happened to many of us. In China, this isn’t a problem on their high-tech trains – they have introduced wireless charging, so you can charge your phone while you are travelling; they have used this technology for the last two years, and it’s very popular. Have you ever forgotten your train ticket? In Japan, they have developed a new system of tickets so that a camera ‘reads’ your face and you don’t need to carry a ticket. They have been testing the new system since the end of 2019 and hope it will be ready to use to all train stations soon.