人教版九年级英语 语法专项训练一 时态与语态
(满分:100分 时间:45分钟)
一、单项选择(每题2分,共30分)
1. Look! The boys ______ football on the playground.
A.play B.are playing C.played D.were playing
2. My mother ______ a teacher for 20 years.
A.is B.was C.has been D.have been



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