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单选题
55.（ ）conscious of my moral obligations as a citizen.
A
A.I was and always will be
B
B.I have to be and always will be
C
C.I had been and always will be
D
D.I have been and always will be
答案解析
正确答案：D
解析：
我一直记得而且也将永远记得自己作为一个公民所负有的道义上的责任。该句是一般性的陈述， 不能用过去时或过去完成时，故排除A 和C。B 中的have to“不得不”表达的是被迫、不情愿的意思，与句子正面、肯定的意思相反。只有 D 正确地表达了说话者的观念持续到现在并将延续到将来的意思。
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