问题
选择题
--Have the police found the parents of the baby found by the road?
---Not yet. His identity ______.
A．would be found out
B．has been found out
C．is being found out
D．had been found out
答案
答案：C
考查时态：句意是;--警察找到路边发现的男孩的父母了吗？--还没有，他的身份正在核实。说明用现在进行时的被动语态，选C。