问题补充:
How long have you read this book?
.
A. In 1980
B. Three years ago
C. Since three years
D. Since 1980
答案:
A. In 1980
B. Three years ago
C. Since three years
(答案→)D. Since 1980
解析:In 1980在1980年;Three years ago三年前;Since three years 表达错误,since后面一般接时间点; Since 1980自从1980年以来。根据上文,你读这本书多久了?现在完成时态。选项AB一般用于一般过去时态中,故选D。
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