Much to my surprise, she tears she read the letter.
A. burst out; instant
B. burst into; the instant
C. burst out; instantly
D. burst into; instant
网友回答
A. burst out; instant
(答案→)B. burst into; the instant
C. burst out; instantly
D. burst into; instant
解析：考查连词。表达“突然大哭起来”用burst out crying或burst into tears。the instant为连词短语，表示“一……就……”句意：令我大为惊讶的是，她一读这封信就大哭起来。故B正确。