909.When I called you this morning, nobody answered the phone. Where ____?
A.did you go
B.have you gone
C.were you
D.had you been
910.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
909.答案是C;
由this morning暗示,应用一般过去时。
910.答案是A;
由下文sent得知,此处应用一般过去时,强调事情发生在过去。