This special school has had more than 1,000 students ___ 1990.A.for B.since C.in D.during

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This special school has had more than 1,000 students ___ 1990.A.for B.since C.in D.during
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This special school has had more than 1,000 students ___ 1990.A.for B.since C.in D.during
This special school has had more than 1,000 students ___ 1990.A.for B.since C.in D.during

This special school has had more than 1,000 students ___ 1990.A.for B.since C.in D.during
B has had 完成时态,用since. 如果是for, for 后面应该跟连续的时间..比如for three years. In 应该是过去时态.

B
自1990年以来,这个特殊的学校有1000多名学生。

B 用于完成时,连接时间的一点。