Mobile phones are everywhere in big cities. It seems that _______can live without one. Mobile phones are a great _______to stay connected with friends and family. _______, it is important to remember that there are certain times _______you should not be using your phone, especially as a student, during school.

________you are in class, you should not be sending your friends text messages _______taking phone calls. Your classmates and teacher should not have to deal with this rude _______ . Aren’t you at school to learn?

In the United States, students would never be allowed to _______ their mobile phones during class. If you were to send or _______ a text message you would probably be kicked ________class. It is very disturbing to hear a lot of tones and ringing during ________ There are many more rules for mobile phone use in America and it is to ________respect for those around you.

As a teacher in China, I have to ________students using mobile phones every day. I have told my class to________their phones, but many students do not listen. The ________to be connected all the time seems to be more ________than the desire to learn.

It’s easy to understand________ it is so tempting(诱惑人的) to have your phone on during class. It seems so easy just to send a short text message; it’s not hurting anyone, is it? But you may actually be hurting ________when you do this. Your teacher knows when you use your phone and may give you a ________grade. Sending a text message also takes your attention away from what’s going on in class, you may________something important.

One of the founding fathers of the Internet has predicted the end of traditional television. Vint Cerf, who helped to build the Internet while working ______ a researcher in America, said that television was ______its “iPod moment”.

In the same way that people now ______ their favorite music onto their iPod, he said that viewers would soon be downloading most of favorite programs ______their computers.

Mr Cerf, who is now the vice-president of Google, says that, “You’re still going to need_____television for certain things—like news, sporting events and emergencies—but ______it is going to be almost like the iPod, where you download content to ______at later.”

Although television on demand has not yet become a ______activity in the UK, the BBC, ITV and Channel 4 have all invested vast ______of money in technology which ______ viewers to watch their favorite shows ______ their computers.

But some critics(批评家),______some Internet service providers, have warned that the Internet will collapse ______ the stress of millions of people downloading programs at the same time. But Mr. Cerf dismissed the warnings, saying that critics had predicted 20 years ago that the net would ______ when people all around the world started to use it all together.

“In the past 30 years it has ______a million times...We’re ______exhausting the capacity,” he said.“It’s a(an) ______worry when they see huge amounts of information being moved around online.”

“I want more Internet,” he said. “I want everyone on the planet to be ______ to connect to the Internet.”

2020 is drawing to a close. I haven’t seen my ______ in a year.

“Take care of yourself, my dear granddaughter,” she spoke into the phone. “I’m ______ already and have lived long enough. Don’t you worry.”

I didn’t want this to be her last ______. While I stay locked in the Klang Valley, she lives far away and is indifferent (不感兴趣的) to modern technology－which makes ______ difficult.

I knew she really ______ to see my face and began to try to find a solution (解决方法).

“Baby steps are the key. Start with what she already ______”, came the Internet advice. ______, she knows WhatsApp and that has a video call function.

“OK, Nani, you know WhatsApp, right?” I ______ her on our next call. “Did you know we can actually ______ each other by using the ______?” I   continued and heard an “oh” on the line. I knew I had her.

While the task is simple enough to us, the cloudy eyes of old age make it a(n) ______ task－coupled with the fact that the Internet connection isn’t always ______.

The first attempt (尝试) had some good results, ______ the angle (角度) was off. I could only see the very top of her head. In the second attempt, we made a little progress, but the poor Internet service ______ to allow us to see each other.

After two ______ attempts, I could tell she was getting upset (沮丧的) “It’s going to be worth it!” I ______ her during our next call.

Finally, on one good day of Internet connection, her ______ was on my screen.

No matter how many phone calls we exchange, nothing ______ seeing her face filled with happiness and love. Our experience shows that even if we can’t see each other ______, the Internet still makes it possible for loved ones to be continually ______.