IV
1. Mr. and Mrs. Smith are flying to Hanoi now. (TRAVELLING) .
=>Mr. and Mrs. Smith are travelling to Hanoi by plane now.
2. Van had a motorbike once, but he doesn’t any more. (USED) .
=>Van used to have a motorbike once, but he doesn’t any more.
3. My father usually goes to work by car. (DRIVES) .
=>My father usually drives to work.
4. This part of the city didn’t have traffic jams very often. (USE) .
=>This part of the city didn’t use to have traffic jams very often.
5. I used to walk to school when I was young. (FOOT)
=>I used to go to school on foot when I was young.
V
1. Traffic jam/ one/ most common/ issue/ big city/ world.
Traffic jam is one of the most common issues in big cities of the world.
2. There/ many/ people/ use/ road/ and/ one/ main reason/ cause/ traffic jam
There are many people using road and it is one of the main reasons cause traffic jam.
3. We/ solve/ traffic problem/ by/ encourage/ people/ use/ bicycle/ rather/ car/ short trip.
We can solve this traffic problem by encouraging people using bicycle rather than car for short trips.
4. People / use / public transports / reduce / number / private vehicles / road .
People should use public transports to reduce the number of private vehicles in the road
5. Move / big / company / factory / city / countryside / help reduce / traffic jam .
Moving big companies and factories from the city to the countryside helps reduce traffic jam