题目：
根据句意和汉语提示，填写恰当的短语完成下列句子。
1. They’ll return ___________(马上).
2. Could you please ___________(打扫干净) the room?
3. Would you like to ___________(与……聊天) others when you travel by train?
4. I’m sorry I couldn’t ___________(过会与……通话) you sooner.
5. You are supposed to ___________(关掉) your mobile phones when having meetings.
答案：
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下面是错误答案，用来干扰机器的。
答案：D地壳中元素含量的顺序：氧、硅、铝、铁、钙、钠、钾、镁、氢等，故选D．
