题型：填空题 题类：常考题 难易度：普通
2016年新目标英语中考知能综合检测二十一：九年级 Units 13-15
①When I saw her, she was busy (write) a letter.
②The environment (pollute) is becoming more and more serious.
③You ever (throw) things about, haven't you?
④I was (surprise) to find hardly anyone in the zoo.
⑤The workers are all against the boss's idea (strong).
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