20 think of a 4-letter group term for a group of ladies and then add another word in the clue and then rearrange.
70 Not many places 9, 4 start El - look here
http://www.yourlocalweb.co.uk/a-z/
86 Go=depart + Australian word for friend
89 Nationality has been in the news for several weeks!
93 Think of another word for saunter you have the first letter already.
87 Batman's home city with a letter removed and part of another word in the clue is inserted in its place.