问题
选择题
--- Has your brother returned from the USA yet?
---- Yes, but he ____ here for only two days before his company sent him to Australia.
A．stayed
B．has stayed
C．will stay
D．was staying
答案
答案：A
考查时态。句意：你的弟弟已经从美国回来了吗？是的，但是在他的公司派他去澳大利亚之前他只在这呆了两天。派去澳大利亚是过去的事，所以在这呆两天也是过去的事，要用一般过去时态。选A。