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【简答题】
小题1:He taught in this school last year.(把last year改为 since last year) He _________ _________ in this school _________ last year. 小题2:They didn’t clean the classroom yesterday.（改为被动语态） The classroom _________ _________ yesterday. 小题3:We have already returned the books.（改为否定句） We _________ __________ the books ___________. 小题4:Rice is grown in China .（划线部分提问） _________ is rice ___________?
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
＜0
＜0【多选题】划线部分的意义 It includes elements such as ground control stations, data links and other support equipment.
A.
地面控制站
B.
数据链路
C.
遥控飞行器
D.
其他支持设备
≤0
≤0
≤