用所给词的正确形式填空they can_______(plant)trees in spring .look,they are__(plant)trees now

问题描述:

用所给词的正确形式填空they can_______(plant)trees in spring .look,they are__(plant)trees now

plant ,can+do 情态动词后加原形
planting ,be+doing 现在进行时

plant planting

plant, planting