用所给词的适当形式填空。

1. But you are supposed to type _____ (quick) so the other person doesn't get _____ (bore).

2. This is _____ (form) by _____ (use) the first letter of each word in the phrase.

3. You can learn it _____ (easy) by _____ (you).

4. Was it ______ (easy) and ______ (fast) to do this by working together?

5. E-mail English _____ (most) _____ (use) two types of word.