问题
选择题
As soon as she saw her boyfriend, she ________ crying.
A．burst into
B．broke out
C．burst out
D．broke in
答案
答案：C
题目分析：考查短语辨析。A突然，后加名词；B(战争、疾病)爆发；C突然，后加代词ing；D闯入。句意：她一看见她的男朋友，她就大声哭了起来。A项后加名词；项后加doing，故选C。
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