问题补充：
When the girl learnt that her boy friend was in the earthquake, she .
A. injured; burst in tear
B. killing; burst into tears
C. still alive; burst into tears
D. missing; burst into laughter
答案：
A. injured; burst in tear
B. killing; burst into tears
(答案→)C. still alive; burst into tears
D. missing; burst into laughter
解析：固定短语。be still alive还活着burst into tears突然哭起来
