问题
选择题
It ___ 6 years since we left middle school.
A．was
B．had been
C．has been
D．were
答案
答案：C
考查固定句式 It is / has been +时间段 +since +主语+动词过去式。题意为：自从我们初中毕业已经六年了。故选C。
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It ___ 6 years since we left middle school.
A．was
B．had been
C．has been
D．were
答案：C
考查固定句式 It is / has been +时间段 +since +主语+动词过去式。题意为：自从我们初中毕业已经六年了。故选C。