他虽然累了，但仍继续工作。

He was tired, ___though he continued working.

尽管电影很长，但我每一分钟都很享受。

___Though the movie was long, I enjoyed every minute of it.

徒步旅行很艰难，不过山顶的景色值得。

The hike was difficult, ___though the view from the top was worth it.