Question

The 30th Olympic Games will be held in London _________ 2012．

[　　]

A．

at

B．

on

C．

in

D．

for

Answer 1

答案：C
解析：

介词辨析。在某一年用介词in．at强调具体时间，on用在具体某一天，for后接时间段。故选C。