More and more people know the importance of protecting the environment.这里的importance用不用加s?还有一个别的问题：花费太多的时间看电视会妨碍学习._______too much time on TV can _____in______ _______ _______ schoolwork.第一个空填spend还是spending?
问题描述：
More and more people know the importance of protecting the environment.
这里的importance用不用加s?
还有一个别的问题：
花费太多的时间看电视会妨碍学习.
_______too much time on TV can _____in______ _______ _______ schoolwork.
第一个空填spend还是spending?
答
importance是不可数名词,不加s
填Spending,动名词做主语