It has not been announced ______ the plane is to take off (飞机什么时候可以起飞)
举一反三
- Has it been announced _____? A: when are the planes to take off B: that are the planes to take off C: where are the planes to take off D: when the planes are to take off
- The plane will {take off} in a minute. A: 脱下 B: 移动 C: 起飞 D: 着陆
- It hasn’t been announced ______ the plane is to take off. A: where B: when C: how D: why
- The plane __________ when we got to the airport. A: had taken off B: has taken off C: will take off D: is taking off
- By the time I got to the airport, the plane( ) . A: took off B: has taken off C: had taken off D: had been taking off