His writing is so confusing that it's difficult to make out ________ it is he is trying to express.(2011·安徽)
This special school accepts all disabled students, _____ educational level and background.
I don’t want ______ like I’m speaking ill of my friend, but he always does not perform what he says.
The school _______ he once studied in is famous.
The doctor said there was ______ with her, but she could not help worrying.
. ___________ she was chosen made us very happy.