注意：此页面搜索的是所有试题
题目内容
（长安大学大学英语3）
No one can recall any detail about the accident. It is at least twenty years since it __________.（2分）
Ahad taken place
Bwas taken place
Ctook place
Dwas taking place
Ahad taken place
Bwas taken place
Ctook place
Dwas taking place
参考答案