1．(绍兴模拟)She was so amused with the magician’s tricks that she ________ a smile.
A．burst out B．burst into
C．burst forth D．burst in
解析：选B。她对魔术师的表演如此开心以至于突然大笑起来。burst into后接名词，相当于burst out＋doing，表示突然……起来。
2.Hearing the news, she burst into________and burst________the room.
A．crying；out B．tears；in
C．crying；into D．tears；out of
解析：选D。burst into tears“突然大哭起来”,相当于burst out crying; burst out of the room“冲出屋子”。
②depend v． 依靠；取决于
