在同时具备（）几项条件时会发生煤气爆炸？A、煤气与空气混合到一定的比例，达到煤气爆炸

根据中文和英文提示，写一封意思连贯、符合逻辑、不少于60词的回信。信的开头和结尾已给出，其词数不计入所完成的回信内。请不要写出你的校名和姓名。
假设你叫张华，是美国中学生鲍勃的朋友。你收到了他的电子邮件，请给他回复，回答他的问题，提出你的建议，并就此事谈谈你的看法。

Hi! Zhang Hua, I have a big problem these days. I spend much time watching TV in the evening after doing my homework. So I often stay up and get up late in the morning. As a result, I usually have no time for breakfast and feel tired all day. My parents don’t allow me to watch TV now and force me to go to bed before 10:30. That makes me unhappy. I don’t think they understand me. Do you have the same problem? What should I do? I’m looking forward to hearing from you. Yours,                           Bob

Hi! Bob,
I’m glad to hear from you.
I hope what I said can help you.
Yours,
Zhang Hua