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该用什么时态?They(put)theyoungtreesintotheholesand(fill)theholeswithearthaftertheydugtheholes."Let'stryto(save)theyoungtree.Let's(move)itintoourgarden."

题目详情
该用什么时态?
They _____(put)the young trees into the holes and ____(fill)the holes with earth after they dug the holes .
"Let's try to _____( save ) the young tree.Let's ____(move) it into our garden."
▼优质解答
答案和解析
1) put, filled 过去式
2) save, move