Low-carbon lifestyle is of great benefit to improve the world environment.________can be enjoyed from it until you have a deep understanding of it,however.
_______ different life today is from_________ it was fifty years ago!
________ that they can’t be shown in the maps.
When________, the museum will be open to the pulic next year.
I don’t want to walk any further. My legs________.
All flights______ because of the air traffic control, the passengers had to wait in the hall.