问题
选择题
---Has your father returned from Africa yet?
---Yes, but he ____ here for only three days before his company sent him to Australia．
A．was
B．has been
C．will be
D．would be
答案
答案：A
考查时态;句意是：你爸爸从非洲回来了吗？--是，但在公司派他去澳大利亚前，他只在这儿呆了三天，说明在这儿三天是发生在去澳大利亚前，也就是过去时间，选A。