问题补充：
Mary made a wise decision on her marriage, for she everything into
consideration.
A. takes
B. has taken
C. had taken
D. was taking
答案：
A. takes
B. has taken
(答案→)C. had taken
D. was taking
解析：
这题考查时态，句意是：对婚姻他做出了明智的选择，因为她把一切都考虑在内了。是先考虑再做决定，所以是过去完成时。选C.
