用所给单词的适当形式填空。

1. It is raining ______ (heavy), I couldn't go out.

2. We enjoyed ______ (oneself) last Sunday.

3. We are excited ______ (see) each other.

4. The old man is very ______ (friend) to me.

5. Look, the sun is shining ______ (bright).

6. —Let's go ______ (skate). —Good idea.

7. Monday is the ______ (two) day of a week.

8. I ______ (can) ride a bike when I was six years old.

9. My brother fell off the bike yesterday and hurt ______ (he).

10. ______ (run) in the morning is good for you.