单项选择题
A.Someone is falling onto the ground. B.Someone is having a heart attack. C.Someone is having a trouble. D.Someone is sleeping off a drunk.
A.feel himself responsible B.call the police C.hear a cry for help D.be with a group
A.Because they were afraid to be killed. B.Because they were cruel in their hearts. C.Because they thought others would help. D.Because they didn't notice the emergency,