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信息发布者:
There was a garden./His garden./A garden./The garden.
It was very clear./Very clear./Clear.
In 1840.
Wang Mengqiu./Wang Mengqiu did (it)./Wang Mengqiu invented it.
It's convenient.
In the past, people kept in touch with their relatives by sending letters. They listened to the radio in
their free time. Besides, children used to ride to school. They had to live in old and small houses too.
But now people can talk to others on the telephone or on the Internet. When they are free, they can
watch TV. What's more, some families can drive their children to school. More and more people have
lived in tall buildings with many floors.