—When _________ you have a book sale?

—Sorry, I _________ know.

阅读材料，回答问题

    诗国里的革命家喊道“皈返自然”！不过那是偶然的事。偶然在言语里发现一点类似诗的节奏，便说言语就是诗，便要打破诗的音节，要它变得和言语一样——这真是诗的自杀政策了。其实他们要知道自然界的格律，虽然有些像蛛丝马迹，但是依然可以找得出来。不过自然界的格律不圆满的时候多，所以必须艺术来补充它。自然中有美的时候，是自然类似艺术的时候。最好拿造型艺术来证明这一点。我们常常称赞美的山水，讲它可以入画。的确中国人认为美的山水，是以像不像中国的山水画做标准的。我在赵瓯北的一首诗里发现了同类的见解。“绝似盆池聚碧孱，嵌空石笋满江湾。化工也爱翻新样，反把真山学假山。”这径直是讲自然在模仿艺术了。

    诗之所以能激发情感，完全在它的节奏；节奏便是格律。莎士比亚的诗剧里往往遇见情绪紧张到万分的时候，便用韵语来描写。歌德作《浮士德》也曾用同类的手段。韩昌黎“得窄韵则不复傍出，而因难见巧，愈险愈奇……”这样看来，恐怕越有魄力的作家，越是要戴着脚镣跳舞才跳得痛快，跳得好。只有不会跳舞的才怪脚镣碍事，只有不会做诗的才感觉得格律的缚束。对于不会作诗的，格律是表现的障碍物；对于一个作家，格律便成了表现的利器。

（节选自闻一多《诗的格律》）

    Do you like to shop on the Internet? Things online are very cheap. I often get 1 online. Let me tell you how to buy one when I want to know something about a book. Firstly, I write an e-mail to the online shop. Then they will2me some pictures of the book. I think this is very helpful.

    Online shops are3open. I can do shopping even at midnight if I want to . Real shops usually close4 nine o'clock in the evening.

    After you5the online shopkeeper what you want, you can have your things in a few days. When you go shopping in a shopping mall, you have to talk 6 with the shopkeeper and walk a lot. I don't like it, because I get tired 7.

    I am teaching my grandmother8 online. She cannot walk very far(远).9it is easy for her to shop online. My brother wants to learn how to do it too. He is very10most of the time. When he has a little free time, he can shop online. So you see, shopping online saves time.

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