Daily Express, Crusader crossword

[Arwen]

Caught song about celebration in canteen, 9 letters ??????R?A.
Moving North, not quite as smooth, 9 letters T?O??????.
MP is rude about taking one committee 9 letters ??E?I????.
Thanks in advance, also for tips on how to ask questions from two fellow crossworders as I'm new to this.

[penelope2]

Presidium

[penelope2]

Cafeteria

[Captain2]

2 Thornless

[factor-fiction]

Regarding your reuest for: "tips on how to ask questions from two fellow crossworders as I'm new to this. "
If you select the Quzzes and Puzzles topic you'll see that at the top of the Q&P page the Ed has put some handy tips on how to ask questions and maximise your chances of getting an answer