题目内容

They fulfilled the task assigned by their teacher earlier than they (expect) ____.

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He (take) ____ off his hat and bowed politely as he passed.

写一篇英语作文,要求用到的时态不少于四种

气管切开术后护理，最重要的是

A. 气管内滴药
B. 观察有无出血
C. 观察有无皮下气肿
D. 保证套管通畅
E. 伤口每日换药

想象未来和回忆过去拥有的快乐和成功体验都是培养挫折承受力的方法。

A. 对
B. 错