Whenaboywithdirtyfacecamein,peoplepresentallburst

问题详情：

 When a boy with dirty face came in, people present all burst____ laughing, while he burst ____ tears.

   A. into, in                      B. into, out                  C. out, into                  D. out, in

【回答】

C

知识点：介词

题型：选择题