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With the land of the city becoming rare, more and more high-rise buildings are under construction around the Jingmen City ___________ space.
Beijing's first unmanned subway trains, which can run ______ without the control of any drivers, are expected to be put into operation next year.
As an experienced teacher, your teaching methods have to be _________enough to meet the demands of different students.
Hubei province has also been stricken by the heavy fog and haze, which ________ be worse and worse and will be a threat to human’s health.
When you state your plan to improve the service of the hotel at the meeting, remember not to_____ any important details.