天下雨时,你在干什么呢?What________you________while it________ ________?
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.
Listen!Someone is (唱歌) in the next door.
Western people like to use (餐刀) and forks while they are eating.