问题
选择题
It ____ over 10 years since my grandpa _______.
A．is, died
B．is, has been dead
C．has been, was dead
D．was, has died
答案
答案：A
考查句型结构it is +段时间+since从句，其中从句常用过去时。
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It ____ over 10 years since my grandpa _______.
A．is, died
B．is, has been dead
C．has been, was dead
D．was, has died
答案：A
考查句型结构it is +段时间+since从句，其中从句常用过去时。