Do not start a book unless you can see from the first few pages that it is ________ you can easily read and understand.
Until the noise of the bus _______ , we were able to hear the program again.
The building is carefully designed so that everyone can leave the building safely if an accident ________.
Your desk is crowded with too many unnecessary things, including used papers and books. You’s better ______ some of them.
As is universally recognized , our strong sense of national ________ has been shaped by our history.
It was a ________ that the whole family survived the earthquake.