I wasn't sure if he was really interested or if he_polite.A.was just being B.had just been Why t...I wasn't sure if he was really interested or if he_polite.A.was just being B.had just beenWhy the answer is Please explain it.
问题描述：
I wasn't sure if he was really interested or if he_polite.A.was just being B.had just been Why t...
I wasn't sure if he was really interested or if he_polite.A.was just being B.had just been
Why the answer is Please explain it.
答
从语法对称的角度，if he was really interested 和if he _ polite，两者用or连接，说明处在同一位置，B选项had been 过去完成时，与was不对应
答
因为两个if小句并列，两句的时态应一致，前一句是一般过去时，故后一句也应为一般过去时，所以选A，B是过去完成时，不对。
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答
A表示还是当时仅仅是出于礼貌
B表示曾经一直怎么样
根据表达的额意思应该是A