问两道英文题目（改变句型）
问题描述：
问两道英文题目（改变句型）
1.This book is more expensive than that one.（保持原意）
That book isn't______ ______ _____this one.(有isn‘t 应该不能用比较级吧)
2.As we all know we should study hard.(保持原意)
______ _______ ______ that we should study hard.
答
1.as expensive as
2. It is well-known