Although we met with some difficulties in building the railway, we were still _____ about finishing it before the deadline.

The　president　made　a＿＿speech　at　the　opening　ceremony　of　the　sports　meeting，which　encouraged　the　sportsmen　greatly．

There were no tickets _________ for Friday’s performance so we went to the cinema instead.

        to his scientific research, the professor cared little about his family.

 Everybody’s fingerprints are _______, so the police can easily find the thieves if any is left when they are stealing.