We at the airport; otherwise we would have arrived home by lunch time.
| A．had delayed | B．were delayed | C．had been delayed | D．have delayed |
English is a language shared by several diverse cultures, each of ____ uses it somewhat differently.
| A．which | B．what | C．them | D．those |
Ted came for the weekend wearing only some shorts and a T-shirt, ______ is a stupid thing to do in such weather.
| A．this | B．that | C．what | D．which |
The prize will go to the writer ________ story shows the most imagination.
| A．that | B．which | C．whose | D．what |
（2011福建卷）It was April 29,2001 Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.
| A．that | B．when | C．since | D．berore |
She has a gift for creating an atmosphere for her students ____ allows them to communicate freely with each other.
| A．which | B．where | C．what | D．who |