问题补充:
—Do you know our town at all?
—No, this is the first time I here.
A. was
B. have been
C. came
D. am coming
答案:
A. was
(答案→)B. have been
C. came
D. am coming
解析:This is the first time 后面所加从句应为现在完成时,故选B。
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