问题
选择题
Listen! Do you hear someone _________ for help?[ ]
A. call
B. calling
C. to call
D. called
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Listen! Do you hear someone _________ for help?[ ]
A. call
B. calling
C. to call
D. called
答案：B