A:戚继光抗倭
B:郑成功收复台湾
C:岳飞抗金
D:文天祥抗元
古人云:“以人为镜,可以明得失”,这句话是告诉我们( )
-- You're dropped __________ “s” in the word “across”.-- Oh, you are right, __________ letter “s” should be doubled like this “cross”.