Chọn từ thích hợp điền vào chỗ trống
20.My son climbed(up/on) the tree to cut some coconust
21.The cat jumped(up/down) from the chair
22. My husband and I walked slowly(through/along) the road
23. We walked(over/through) the woods
24. They're building a new bridge(into/across) the rives
25. The dog jumped(over/through) the wall