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：考查词组：句意：她对魔术师的魔术感到如此好笑以至于她突然笑起来了。Burst out doing和burst into sth突然…，burst forth产生，burst in突然闯入，选B。