The discovery of how bronze is made was probably accidental, but it
to be an important event.
| A．turned over | B．turned about | C．turned out | D．turned off |
English is a language shared by several diverse cultures ,each of____ uses it somewhat differently .
| A．which | B．what | C．them | D．those |
The old town has narrow streets and small houses _____are built close to each other.
| A．they | B．where | C．what | D．that |
She showed the visitors around the museum, the construction _____had taken more than three years.
| A．for which | B．with which | C．of which | D．to which |
Between the two parts of the concert is an interval, __________ the audience can buy ice-cream.
| A．when | B．where | C．that | D．which |
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 |