短文改错（共10分，每小题1分，满分10分）
One day a child was playing with a vase in great value. He careless put his hand into it. Hard as he tried, he could not pull it out. His father tried his best, too, but their efforts were in a vain. They were thinking of breaking the vase whenever the father said,“now , my son, why have one more try? open your hand or hold your fingers straight as you saw I doing, and then pull.”to his surprise, the child says, “I can’t hold my fingers straight like that, because I don’t want to drop my penny.” Thousand of us sometimes are so busy hold on to the world’s worthless penny that we cannot achieve liberation.
小题1:in→of
小题2:careless→carelessly
小题3:去掉a
小题4:whenever→when
小题5:why与 have之间加 not
小题6:or→and
小题7:I→me
小题8:says→said
小题9:thousand→thousands
小题10:hold→holding
题目分析：
小题1:of +抽象名词，相当于形容词，of great value=valuable
小题2:carelessly修饰动词put
小题3:考查词组：in vain徒劳的
小题4:when引导时间状语从句
小题5:why not是为什么不？好啊！
小题6:张开手和伸直手指是并列关系
小题7:see sb doing用人称代词的宾格I→me
小题8:这篇文章是用过去时says→said
小题9:考查词组：thousands of成千上万
小题10:be busy doing忙于做hold→holding
点评：考查考生在上下文中运用语法的能力，要特别注意名词单复数，动词主谓一致，形容词和时态。还有复杂句，如定语从句和宾语从句。