问题补充：
-- Has your elder brother 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. was
B. has been
C. will be
D. would be
解析：根据句意他只在这呆了三天他的公司就派他去澳大利亚了。现在已经不在这了，呆在动作在过去，所以选A。
