-What's up? You look worried.Well,I_____on the problem for 5 hours but I haven't got a single clue.
On a _____ morning the little match girl was found _____ at the corner of the street.
Having finished the work, _____.
The lecturer began by _____ us where the island was, and went on _____ about its history.
I wondered whether the movie was _____ worth _____.
Besides _____, she is kind and tender.