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2 Although it was quite cold, the heating was on in the room.
3 Although she wasn't wearing a coat, I recognised her from a photograph.
4 Although we don't like them very much, we thought we'd better invite them to the party.
5 Although I didn't speak the language, I managed to make myself understood.
6 Although I'd met her twice before, I didn't recognise her.
7 Although the room wasn't warm, it was quite cold outside.
8 Although we've known each other a long time, we're not very good friends.