介词填空。
1. Can you write _____ English?
2. A lot of e-mail English words might look unfamiliar _____ us many look _____ rubbish.
3. It's created _____ combining letters and symbols or numbers.
4. " Great" would be written _____ "gr8".
5. You can make faces _____ punctuation marks.
6. It's made with a colon and a right bracket _____ it.
7. You can learn it easily _____ yourselves.
8. It's important to use it only _____the proper time.
9. You can send a message to your friend _____ a mobile phone.