问题详情

—Tom! What"s that？—There two girls behind you. ______You’ve just noticed？—I don’t get why anybody does that anymore. It’s so annoying!
A．They’ve been smoking like chimneys.
B．I can’t stand smoking here.
C．Many people around here are smoking.
D．The secondhand smoke is going to kill us.请帮忙给出正确答案和分析，谢谢！