城市规划区内集体所有的土地出让，应具备的法定条件是( )。

A．由国家先行征用

B．先转让给国家

C．经集体土地所有者同意

D．经集体经济组织2/3以上的成员同意

—Did you hear about the terrible accident ?

—Yes, but I don’t know _________.

A．where was it happened

B．where it was happened

C．where did it happen

D．where it happened