I ______ in this school since 1988.A、taughtB、was teachingC、have taughtC时间状语si

游客2025-07-04  4

问题 I ______ in this school since 1988.

选项 A、taught
B、was teaching
C、have taught

答案 C

解析 时间状语since 1988提示应该用现在完成时态。
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