Had no probs with the GK this morning, but the cryptic is really bamboozling me. Would appreciate some help, hope you can ...
1d initial switch for celebrity in Russia a century ago (7) t???d?
4d burns with heat, if silly, as this (9) s???a????
17a pulled out of club, I later alternated between two sides (9) b???t????
27a foreigner protected by stone part of fortification (7) s???e?t