4. contains改为contain。主谓一致错误。主语programs为复数形式。

3. 此行无错。

2. about后加it。about是介词， 后面应接名词、 代词、 动名词作宾语。　 　

1. easier前加is。此处应构成“主语+系动词+表语”句型。

10. 删去it。此句中已有宾语your names， 不需用it。

Exercise 3

Listening to foreign broadcast easier 1. _______

if we know something about. There are clues 2. _______

that can help us. One clue is the time of 3. _______

day. Morning programs usually contains many 4. _______

short items of news, informations, etc. The 5. _______

items are short because of most of us are 6. _______

getting ready to going to work in the 7. _______

morning. Often we do not have time listen 8. _______

to long programs. There are time for more 9. _______

details about the subjects discuss in evening programs.10. ______

　　 答案及解析

9. go改为come。根据文章第一句话可知， 此通知发出者是the Students’ Union。所以要用come而不用go。

8. Those后加who。此处用who引导定语从句。

7. Someone改为Everyone。everyone侧重整体， 指“每个人”； someone侧重个体， 意为“某个人”。

6. 此行无错。

5. begins改为begin。will后需用动词原形与will共同构成谓语部分。