精选优质文档-倾情为你奉上动词不定式练习题一、 强化练习(一) 根据中文意思,完成下列句子 1. 很难知道未来是什么样子。 _ what the future will be like is difficult. = It is difficult _ what the future will be like.2. 他答应不把这件事告诉任何人。He has _ anybody about it.3. 活到老,学到老。 Its never too old _. 4 这本书很难懂。This book is difficult _. 5. 我发现在三个小时内完成这项工作是不可能的。 I find it impossible _.6. 爱和被爱都