问题
选择题
—Have you found the missing?couple in the mountain ?
—No, but we hard to get in touch with them．
A．have tried
B．have been trying
C．had tried
D．had been trying ．
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—Have you found the missing?couple in the mountain ?
—No, but we hard to get in touch with them．
A．have tried
B．have been trying
C．had tried
D．had been trying ．
答案：B