Xiehouyu sports lottery three-character puzzle

1. Sparrows are small and complete (3). People who come are always welcome, but those who leave are hard to stay (3). Silence is better than sound (platoon). 4. The beads are round and smooth, and the mountains and rivers are swallowed up (3). 5. Cowardly as a mouse, with a face like a crown jade (6). It takes ten years to grow trees, but it takes a hundred years to cultivate people (platoon). 7. You can't fight without it.