No one else seems to be stuck with 3ac (Bonnet maker), 4d (unexpected) and 5d (Toss up).
For 4d I have _ _ o_ i_. The best I can come up with is exotic.
5d I have _ _b and I'm guessing lob.
3ac I currently have _ _ _ _ _ p_r and nothing seems to fit, certainly nothing from Chambers so I'm guessing it's a proper noun.
I'm not well versed in bonnet makers. ;-)
Can anyone help?