按要求完成句子。
1. the, at, look, blackboard (.) (连词成句)
______________________
2. door, the, please, close (.)(连词成句)
______________________
3. O____ the window, please. (根据句意及首字母提示写出单词)
______________________
4. Sit down, please. (翻译成汉语)
______________________
5. 起立！ (翻译成英语)
______________________
( ) 
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