The driver in plain clothes, was extremely calm and brave in face of danger, was just over twenty.
The beautiful mountain village __________ we spent our holiday last year is located in __________ is now part of Guangxi.
In China,the number of cities is in-creasing __________ development is recognized across the world.
The girl arranged to have piano les-sons at the training centre with her sister __________ she would stay for an hour.
Stephen Hawking believes that the earth is unlikely to be the only planet __________ life has developed gradually.
Children who are not active or __________ diet is high in fat will gain weight quickly.【选项 】