She was so amused with the magician’s tricks that she a smile.A. burst outB. burst intoC.

问题补充：

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

答案：

A. burst out

(答案→)B. burst into

C. burst forth

D. burst in

解析：短语辨析。 A.突发；摆脱 B.闯入；情绪突然发作 C. 突发 D. 突然出现。句意：魔术师的把戏让她觉得是如此好玩，因此她突然笑了出来。故选B。