问题描述： it very hard to还是it's very hard to?还是都对? 1个回答 分类：英语 2014-10-23 问题解答： 我来补答 如果不作主句,可以用it very hard to,如:I found it very hard to understand.作主句一定要用It's very hard to... 展开全文阅读
