.All hope of finding the missing plane ______, the relevant authorities declared the crew and passengers ______．

A．giving up; were killed

B．giving up; killed

C．given up; killed

D．given up; killing

下列（）行为构成抢劫罪。

A.行为人随身携带枪支、爆炸物、管制刀具等国家禁止个人携带的器械进行抢夺的

B.行为人盗窃他人财物后，对追捕的受害人使用暴力的

C.行为人劫持被害人到其家中取出存折，然后又劫持其到银行取款的

D.行为人为了抢甲某钱财，而动手将其打死，把财物拿走的