7d Reason 50% is at 75% as well ??t?u?(6).
5a stand back behind horse with fairy(6). ?o???b could be cobweb, but the W would give w?t?u? and I can not see that for 7d.
No problem. See the Ed's "Tips For Getting Better Answers" link above, and remember that crosswords questions have their own section under Quizzes & Puzzles.