20．網(wǎng)上購物雖然便捷，但個人信息的安全問題不容忽視．（while）While it is convenient to shop online，we can't ignore the safety of our personal information．．

19．這份工作要求太高，沒有幾個人能勝任．（So…）So demanding/challenging is the job that few people are qualified for it．

18．青年人很有必要學(xué)會對自己所做的事情負(fù)責(zé)．（essential）It's （really/absolutely/fairly） essential that young people （should） learn to be responsible for what they do/are doing/have done或It's （really/absolutely/fairly） essential for young people to learn to be responsible for what they do/are doing/have done．

17．吉姆不假思索地回答了老師的問題．（hesitation）Jim answered his teacher'squestion（s） without （any） hesitation或Jim answered the question（s） asked by his teacher with no hesitation．

16．______ a little money from her pocket money，Alice was able to buy her mother a lovely scarf．（　�。�

A．

To save

B．

Saving

C．

Saved

D．

Having saved

15．Judging from the date _______ on the gold coin，we can tell that it was made 500years ago．（　�。�

A．

being marked

B．

marked

C．

to mark

D．

to be marked

14．Hard     Charles worked，he wasn't qualified enough for the position of the sales manager．（　�。�

A．

although

B．

while

C．

when

D．

as

13．      it was hard for children to leave family and friends，many families chose to send their children to America．（　�。�

A．

Because

B．

Although

C．

If

D．

As

12．______ we are aware of the effects that diet products have on us，it is time to seriously think about buying them．（　�。�

A．

As far as

B．

Now that

C．

Even though

D．

So long as

11．假如英語課上老師要求同桌之間交換修改作文，請你修改你同桌的以下作文．文中共有10處語言錯誤，每句中最多有兩處．每處錯誤僅涉及一個單詞的增加，刪除或修改．
增加：在缺詞處加一個漏字符號（∧），并在其下面寫出該加的詞．
刪除：把多余的詞用斜線（\）劃掉．
修改：在錯的詞下劃一橫線，并在該詞下面寫出修改后的詞．
注意：1．每處錯誤及其修改均僅限一詞；
2．只允許修改10處，多者（從第11處起）不計分．
I'mvery glad to have received the letter you sent me two weeks before．I have been thinking about the question you ask me．On my opinion，you should come back after finished your studies abroad．For one reason，that you are studying is badly needed nowadays in our country．It will be quite easily for you to find a good job．In fact，I know a few big company in our city are hoping to hire people like you．For another reason，I think it will be too much more convenient for me to look after your parents as they are getting old．But this is only my point．It is up to you make a right choice．