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用所给动词的正确形式填空
________ (keep) it straight, we must ________ (tie) the tree to the top of the stick.
查看习题详情和答案>>2. Knock a _____ into the earth to keep the tree _____.
3. Put the _____ in the _____. Make _____ that it is _____.
4. _____ the _____ back into the _____.
_____ it _____ hard with your _____ several times.
5. Tie the _____ to the top of the stick to _____ it straight.
6. _____ the tree well.
你会植树吗？
1．The ground must be just right－neither too wet nor too dry. It's best to plant trees in spring because it's warm.
2．Dig(挖) a hole(坑) large enough for the tree. But the hole should not be too deep.
3．Knock a long, strong stick(木棒) into the earth next to the hole. Make sure that it is straight.
4．Put the tree in the hole. Make sure that it is straight.
5．Put the earth back in the hole again. Push it down hard with your foot several times.
6．Tie the tree to the top of the stick to keep it straight.
7．Water it well as often as possible.
用一个到两个动词词组概括种树的过程：
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