hép=)) ----- Nội dung dịch tự động từ ảnh ----- IV. Choose the best word or phrase (A, B, C or D) to complete each sentence. 1. Improving city's traffic system such as inventing sky trains will stop road users traffic jams. A. out of B. from C. into D. on 2. We can produce cars that can travel very fast, but it must be safe for drivers to use. A. environmental B. pilotless C. friendly D. high-speed 3. He wants to create a(n) ship which can discover the mystery of oceans. A. flying B. space C. underwater D. endless 4. In the past, people usually. a horse to move to anywhere they wanted. C. flew A. rode B. sailed D. drove a taxi to the museum while her sister is. C. in/ on 6. In the big cities, people have a difficulty in moving on. 5. She is a bus to school. A. in/by B. on/ in D. by/ on roads in rush hours. A. gridlocked B. large C. comfortable D. convenient 7. They are the problem of air and noise pollution from crowded streets. A. dealing B. facing C. taking D. talking