Write questions for the underlined parts. 1. A: B: Vietnam’s transportation system has changed dramatically over the past ten years. 2. A: B: Electric trams were used as the main means of public transport in Hanoi. 3. A: B: Construction of the Thu Thiem tunnel was delayed because of difficulties in Site clearance. 4. A: B: The first metro in Saigon will be put into operation in 2020. 5. A: B: The railroad of Vietnam is over 3,000 km in total. 6. A: B: The Hai Van Tunnel is situated on Highway 1. 7. A: B: The first skytrains in Vietnam have four compartments. 8. A: B: People in Vietnam had travelled by bicycle before the first motorbike was imported.