用方框中所给词的适当形式填空。
1. How about ____(explore) that mountain?
2. Jack couldn't help ____(cry) when he was alone at night.
3. —Why do you walk to school? — My bike is ____(break).
4. He is a ____(success) basketball player.
5. We are looking forward to ____(watch) the movie.
1. exploring 2. crying 3. broken 4. successful 5. watching