短文填空。根据短文内容，从方框内选择合适的单词并用其适当形式填空，使短文完整、连贯。

easily, exchange, fast, improve, interest, however, instead, organize, receive, use

Sending and reading e-mail have become one of the most popular daily activities around the world,
either for business or for pleasure. Now, more and more teachers and students are (1)_____thisform
(形式) of communication to (2)_____their language skills, particularly in English. E-mail has become so
popular because it's quite (3)_____. In the past, teachers often (4)_____ pen pal projects so that their
students could (5)____ideas with their pen pals. But sending and (6)_____ paper letters could take a
few weeks sometimes, so students might lose (7)_____in the project some day.
Now with e-mail, (8)_____, messages can be sent or received (9)_____on the Internet. (10)_____
of waiting for days or weeks, students can receive a reply during days, hours, or even minutes.

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