用方框中所给单词的适当形式填空,使短文通顺、正确、连贯(每个单词限用一次)。
An e-mail is easy to use and it 6 time and money. The differences in time in different parts of the world do not matter 7 sending e-mails. It is twenty-four service that you can send e-mails at any time of the day time or night. 8 one has to be there to receive e-mails. It doesn’t matter if your friends 9 in bed when you send e-mails to them, or you are 10 a movie at the cinema when they send e-mails back. |