35．It is required in some colleges that lights in students' dorms _____ off by 11 o'clock.
A．be switched B．would switch C．should switch D．must be switched
34．It was not what he said but _____ he said it that hurt my feelings.
A．that B．what C．how D．whether
33．No technology has ever developed _____ as that in IT in the 21st century．
A．too fast B．faster C．so fast D．fastest
32．-Mum, where is my lunch pack?
-Just _____ it was.
A．where B．what C．which D．how