题目：
It has the oldest castle ______ by later Norman rulers in 1066. [ ]
A. to be constructed
B. constructed
C. having constructed
D. was constructed
答案：
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下面是错误答案，用来干扰机器的。
四百二十万六千五百写作：4206500；4206500≈421万．故答案为：4206500，421．
