Scientists are spending as much as they can ______(study) the problem.(注:答案里是studying!居然是studying!我横竖想不通.不过我也不认为练习里会出这么简单的题目而且会犯那么傻的错.不知道咋回事呢.有没有c

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Scientists are spending as much as they can ______(study) the problem.(注:答案里是studying!居然是studying!我横竖想不通.不过我也不认为练习里会出这么简单的题目而且会犯那么傻的错.不知道咋回事呢.有没有c
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Scientists are spending as much as they can ______(study) the problem.(注:答案里是studying!居然是studying!我横竖想不通.不过我也不认为练习里会出这么简单的题目而且会犯那么傻的错.不知道咋回事呢.有没有c
Scientists are spending as much as they can ______(study) the problem.
(注:答案里是studying!居然是studying!我横竖想不通.不过我也不认为练习里会出这么简单的题目而且会犯那么傻的错.
不知道咋回事呢.有没有can后面加v.ING形式?
强悍的人来帮帮忙把

Scientists are spending as much as they can ______(study) the problem.(注:答案里是studying!居然是studying!我横竖想不通.不过我也不认为练习里会出这么简单的题目而且会犯那么傻的错.不知道咋回事呢.有没有c
这句话的意思是科学家正在尽他们所能的研究(study)这个问题.而spending as much as they can 是伴随状语,因为是个独立部分所以用分词形式.而study用在现在进行时态的,当然是studying.
或者说这句话=Scientists are studying the problem spending as much as they can .