我去过海南岛两次了. I Hainan Island twice.
The (人口) of China is about 1.41 billion in 2021.
Many people think computers and the Internet will (取代) books.
They'd like to go sightseeing (而不是) of staying at the hotel.
Chinese scientists (发送) a spaceship to the planet Mars to take photos in July 2020.
There is nothing (奇怪的) in the box.