The long-lasting meeting, filled with arguments and quarrels, ended in disorder,    no conclusion.

On ______ the flight would be delayed, we made other arrangements.

--- What has made him upset recently?--- __________ alone to face a troublesome case．

We were astonished ________ the temple still in its original condition.

_______ and guilty, Maggie put the book on the shelf she had secretly placed in her schoolbag.