根据句意及首字母提示补全单词 。

1. —Why are you so happy?   

    —Because I  r          a letter from my father yesterday.

2. Why not give Nick a photo a          as a birthday gift?

3. I want to get my sister something special for her birthday. Can you give me some s          ?

4. I think this kind of TV program is boring. Would you mind c          the channel?

5. P          computers are widely used in Chinese homes today.