缺词填空 根据短文内容及首字母提示，补全空格内单词，使短文完整、通顺。（共10小题；每小题1分，满分10分）
Are you able to send a letter with pictures and sounds to someone anywhere in the world without putting a stamp on it? W  e-mails you can do that. Using a c   you can send e-mails quickly and easily. The post is much s   than e-mail. E- mails can send the message to the other s   of the world in seconds.
E-mail is easy to use and it s   time and money. The differences in time in different parts of the world do not matter w  to send e-mails. It is twenty-four-hour service that makes you send your e- mail at any time of the day or n . No one has to stay t   to receive e-mails. It d   matter if your friends are in bed when you send an e-mail to them, or you are seeing a f    at the cinema when they send an e-mail back.