To send and to read email has quickly become one of the most common daily activities around the world, either for business or pleasure.    小题1:  
Several reasons why email has become a great tool is that it is fast, convenient, and affordable. 小题2: In the past, teachers often organized pen friends project where their students would exchange letters with another group of students in another country   小题3: And by that time, students might lose interest in the project or the class might and before a serious of meaningful exchanges can take place.   小题4: With email, however, messages can be sent at a click of a button at school, home, or an Internet café, and if you are using a free email account, the cost is free(not taking into account any Internet Service Provider fees that you have to pay).
 小题5: Email has a lot to offer, for language learners and teachers in the classroom.

A．In addition, students have to pay imitational postage to send the letters.

B．However, the turn-arcund time for sending and receiving traditional letters can take up months.

C．Now, more students are using this form of communication to improve their language skills.

D．Students can develop friendships with people from around the globe.

E．While chatting online, never give out personal information including your age.
F．One particular activity that takes advantage of these points is a key pal exchange.
G．Instead of waiting days or weeks for a response, students can receive a reply quickly.