They had no other option but to clean the tunnel but only the parts Alexandre had already cleaned.
他们别无选择，只能清理隧道，但只清理亚历山大已经“清理”过的部分隧道。
They cleaned upstairs, downstairs, inside, outside, until everything was clean.
他们把楼上、楼下、里面、外面打扫得干干净净。
Our classroom is very clean and tidy because it is cleaned every day.
我们的教室非常干净整洁，因为它每天都被打扫。
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