A:care for
B:fall for
C:ask for
D:answer for
观察等式:① 11×2 =1﹣ 12 ;② 12×3 = 12 ﹣ 13 ;③ 13×4 = 13 ﹣ 14 ;④ 14×5 = 14 ﹣ 15 ,…
别人跟你说“I'm sorry.”你应该回答: