我要的是理由）
1(B)Fifty to sixty percent of all handguns are reported____for criminal purposes in the U.S.
A to use B to be used C to have used D using
我选的是C
2）（A）It was an unforgettable accident that the luxurious ocean liner sank while_____ the Atlantic.
A crossing B crossed C being crossed D having crossed
我选的是D,我认为译为“已经穿过那隧道”,如果选A你想想看在穿隧道时隧道沉没了他还活着吗?.