Cloze text: Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that bes...

Cloze text: Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

In the future, transportation is likely to undergo significant changes. Firstly, we may see more electric vehicles on the roads, (631) _____ will help reduce air pollution and reliance on fossil fuels. These vehicles are powered by electricity instead of gasoline or diesel, making them more environmentally friendly. (632) _____  change could be advancements in autonomous vehicles, also known as self-driving cars. These vehicles can operate without human input (633) _____  they potentially make transportation safer and more efficient. Additionally, we might see the (634) _____  of high-speed trains and hyperloop systems, allowing people to travel faster between cities. Overall, future transportation (635) _____  the promise of being cleaner, safer, and more convenient for everyone.

(Adapted from www.plugandplaytechcenter.com)

Trả lời cho các câu 631, 632, 633, 634, 635 dưới đây:

Câu 631:

A. which

B. that

C. what

D. who