1. With iron pulling trenching2. Last week, we learned some interesting animals.3. He used animal skins to make clothes4. Last Saturday is Arbor Day. Weather.5. Yesterday you go to plant trees and it? Yes 我老师告诉我的``嘿嘿
26 with iron clench digging1. Last week, we learned some interesting animal6 he animal fur make clothes9 is the Arbor Day on Saturday. It's sunny.10 yesterday you to plant trees? Yes,
26. use spade to dig a hole(on the ground)1.last week, we had (understand) study about some interesting animals.6.his clothes were made from animal's fur.9.last Saturday was National Tree-Planning Day, and the weather was great(good).10. did you go and plan trees yesterday? Yes, i did.括号里的词语是可以代替的，两种说法都没有问题但个人觉得括号外面的在口语上可以更自然，比起括号里面的用词也更好一些。
