*Choose the best answer to complete the sentences.
1. A lot of …………………were built to solve the traffic jam problem at intersections.
A. trams B. flyovers C. skytrains D. tunnels
2. There has been a …………………increase in people’s income over the last ten years.
A. gradual B. gradually C. slightly D. dramatically
3. The very first metro is being built to …………………the travel demands of Saigonese.
A. solve B. make C. see D. meet
4. Everyone was …………………that the government had decided to invest more in education.
A. sorry B. confident C. glad D. afraid
5. …………………ease traffic congestion, it is necessary to promote the development of public transport.
A. Because of B. Despite C. In order to D. Since
6. My elementary school was …………………surrounded by paddy field, but they have built a park on the site.
A. significant B. slightly C. gradually D. initially