(2013·正定中学二次月考)Some passers­by witnessed the car accident ________ five passengers were killed，a baby included.

A．in which

B．which

C．that　

D．in that

甲为某市副市长，在代表该市到其他省、市进行招商引资活动中多次接受对方省、市赠送的礼品，价值50万元，应当交公而没有交公。甲的行为构成（）。

A．侵占罪

B．受贿罪

C．贪污罪

D．职务侵占罪