问题补充：
He said that his friend there three days before, but she was not there.
A. had been; now
B. has been; then
C. had been; then
D. was; now
答案：
A. had been; now
B. has been; then
(答案→)C. had been; then
D. was; now
解析：考查时态和副词，第一空的时态是过去完成时，因为主句是过去时，从句的动作发生在主句动作前三天，第二空副词then代指three days before。句意是：他说三天前他的朋友到过那儿的，但她当时不在。选C。
