问题
选择题
In order to find the missing child, villagers ________ all they can over the past five hours.[ ]
A. did
B. do
C. had done
D. have been doing
答案
答案：D
搜题请搜索小程序“爱下问搜题”
In order to find the missing child, villagers ________ all they can over the past five hours.[ ]
A. did
B. do
C. had done
D. have been doing
答案：D