Make sure you ........ the on button before you start.

Try to ............ clearly. We cannot see your handwriting.

Remember to charge the battery before it ...........

............... to back up your data before you turn off the laptop.

........ to sleep earlier. You're don't feel well today.

i ............ I don't know what to do with this computer.

Write a or an in the correct places. (There are nine other places in this paragraph.)

My brother just bought _____a____smartphone. It's really great. It has lot of high-tech features. In fact, it's amazing handheld computer, not just cell phone. For example, it has Wi-Fi connectivity, so my brother can connect to the Internet in most places. He can send message to friend by email or through social networking site. Fie can also find out where he is because it has GPS app. That's perfect for my brother because he likes mountain climbing. He'll never get lost again! His smartphone also has excellent camera, so he can take photos of his climbing trips. And of course, it's phone. So he can talk to his girlfriend anytime he wants!