5.解析：现在分词作状语。

答案：filling

4.解析：由上下文可看出，此处为转折关系。

答案：but

3.解析：考查冠词的用法。

答案：an

2.解析：由上文可判断此处应用形容词，strong­minded意志坚定的。

答案：strong­minded

To be a more optimistic person，you'd better end negative messages as soon as they start by using the one­word command：stop！

In theory，stopping is a simple technique.　1　 practice，it's not as easy as it sounds，to be effective at stopping，you have to be forceful and 　2　(strong­mind).Raise your voice when you give the command.Picture yourself fighting against the inner voice of fear.

Vincent，a hard working bachelor in his 20s，was 　3　executive in a large company.His mother died when he was young，and his father raised him.They had gotten along well，　4　 his father was overprotective，　5　(fill) Vincent's head with worrisome thoughts.Without realizing 　6　，Vincent carried these thoughts into his adult life.His father's role 　7　(take) over by his inner voice.Vincent was a worrier.

Although 　8　(attract) to a woman in his department，he never asked her for a date.His worries trapped him：“　9　 is not a good idea to date a co­worker，or，if she says no，it'll be embarrassing.”

When Vincent stopped his inner voice and asked the woman out，she said，“Vincent，　10　took you so long？”

语篇解读：本文讲了人要变得乐观，就要在内心争斗，去掉消极信息，命令自己迅速行动。

1.解析：in theory和in practice为两个相对应的词组。

答案：In

20.Little joy can equal 　　 of a surprising ending when you read stories.

解析：用that代前面的不可数名词joy。

答案：that

19.-He got his first book published.It turned out to be a bestseller.

-When was 　　？

-　　 was in 2000 when he was still in college.

解析：句意：--他的第一本书出版了，非常畅销。--是什么时候的事？--是在2000年，当时他还在上大学。that指代上文。第二空的句子是强调句型。只保留了前半部分It was in 2000 when he was still in college，省略掉了that he got his first book published。

答案：that；It

18.-Have you heard the latest news？

-No，what is 　　？

解析：句意：--你听说最新的消息了吗？--没有，什么消息？题干上文中news(消息，新闻)为不可数名词，下文中的代词应指代这一名词，it代指单数名词， 且与上文中的名词为同一事件，故填it。

答案：it

17.The book is of great value.　　 can be enjoyed unless you digest it.

解析：句意：这本书非常有用，但如果你不理解内容就无法欣赏它。从unless you digest it和语意可知主语应含否定意义。

答案：Nothing

16.　　 felt funny watching myself on TV.

解析：句意：看着自己上了电视感觉很好玩。根据句子结构，空缺部分是句子的主语。依据句意，空格部分只能是形式上的主语。只有it 可以作形式主语来代替真正的主语watching myself on TV。

答案：It