1 . In the past four years, local education departments have trained about 40,000 football teachers , 8,000 of ___________ have obtained coaching certificates. （用适当的词填空）

2 . This aspect will be discussed further by Crane in the next lecture, ________ I mentioned just now.

A．whom

B．why

C．that

D．when

3 . 我有一个英国笔友，今年夏天我终于在伦敦见到了他。
I’ve got an English penfriend, ________________I finally got to meet in London this summer．

4 . Nearly 60 percent of the participants were impressed by China’s “economic development” and “progress in science and technology” in recent years, most of __________ were academics and professionals. (用适当的词填空)

5 . Camping popularity increases among young people. Most of them are nature lovers. (用非限制性定语从句合并)

6 . 北京冬奥会不乏志愿者，大多数是年龄在18至25岁的年轻大学生。(lack) （汉译英）

7 . The school has more than 970 middle and high school students, half of ________ are Chinese. （用适当的词填空）

8 . More than two hundred people attended Steven's wedding, half of ________ were his relatives.

A．them

B．who

C．whom

D．which

9 . 请同学们对下列十句话进行改错，每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
1. The baby which Tom is looking after is his brother.
2. There was a time what the businessman lost heart.
3. Cindy is a lovely girl, with that many people like to make friends.
4. Which we all know, China is a developing country.
5. Don’t call Mary. She is interviewed right now.
6. Nowadays more and more functions are being adding to mobile phones.
7. The girl is really upset because her new bicycle has stolen.
8. Someone might use the informations to steal your identity.
9. With the help of my English teacher, I have made a progress in English.
10. Our planet’s wildlife is dying out at an alarmed rate.

10 . These are among the 669 children, most of ________ Jewish, ________ Nicholas Winton will go on to save from death at the hands of the Nazis.

A．them; whom

B．whom; that

C．whom; whom

D．them; which