问题
edly, yesterday a group ofAmerican soldiers were walking along the road in Iraq when a bomb was _______,three of whom were killed
A:Sure, it's up to you
B:Sure, no problem
C:Sorry, I can't make it
D:Sorry, I'm not available today
B:Sure, no problem
C:Sorry, I can't make it
D:Sorry, I'm not available today
正确答案是：
