根据句意和单词的首字母提示写单词。

1. My grandfather can't play sports, but he likes to w________ them on TV.

2. I don't like history. It's b________.

3. I have a s________ bookcase in my room.

4. It's r________ to watch TV.

5. We play sports e________ day.

6. This question is d________. I can't answer it.

7. I have no brother or sister,b________ I have many friends.

8. I like playing computer games. It's very i________.

9. He has o________ one pencil in his pencil case.

10. —Let's play soccer. —That sounds f________.