V. Read the following passage and choose the best answer to fill in each blank. My uncle is working at a car company. His company is now developing (21) ________ new flying car. The car will have solar panels on its roof and wings, and it will charge (22) ________ battery as it moves. During light traffic, you can use roads. (23) ________ in heavy traffic, you can use the flight mode to avoid traffic. It will be able to carry eight passengers. The car will have an autopilot function, so a driver is not (24) ________. All passengers can relax, read books or play games while travelling. I was worried (25) ________the safety because it is driverless, but my uncle said it will be much safer than a traditional car. It will also be more comfortable and greener because it is solar-powered. 21. A. the B. a C. an D. x 22. A. it B. it’s C. its D. itself 23. A. But B. Because C. So D. And 24. A. important B. helpful C. modern D. needed 25. A. with B. about C. for D. by