英语首字母填空 3qTraffic is one of the most serious preblems in sha

英语首字母填空 3q
Traffic is one of the most serious preblems in shanghai.though these years we b____many viaducts,light rails and tunnels.the streets in shanghai are becoming w____than before .but every day we still can see l____of bicycles,buses,cars in the street.traffic accidents will happen when people are not c____enough.so everyone should o____the traffic rules .and we are s___that the traffic in shanghai will be better and better in the future