13.(　 ) -Jerry, do you mind my pointing out your mistakes?

-_________. Your advice is of great value to me.

　　 A. Not at all　　 　B. You’d better not　　　 C. Of course　　 D. It’s　 my pleasure

12.(　 ) Mr Brown always makes his class _______ and keeps his students _______ in class.

　　 A. alive; interesting　　 B. lively; interesting　 C. alive; interested　　 D. lively; interested

11.(　 ) The Gulf of Mexico(墨西哥湾) is being polluted seriously. That has affected _________ several hundred kinds of sea animals there.

　　 A. at least　　 B. at once　　 C. at birth　　 D. at times

10.(　 ) -The Summer Palace is wonderful. Have you ever visited any other interesting places?

-Yes. Also, we _________ to the Great Wall.

　　 A. have gone　　 B. have been　　 C. had gone　　 D. had been

9.(　 ) -We have finished watering all the trees, Miss Li.

-_________! Boys and girls, let’s have a drink.

　　 A. Good luck　　 B. Well done　　 C. Good idea　　 D. Best wishes

8.(　 ) A tourist will easily lose his way in Beijing _________ he has a map or a guide.

　　 A. if　　 B. because　　 C. unless　　 D. when

7.(　 ) It’s said that smoking won’t be ____ in indoor public places or workplaces in China soon.

　　 A. attacked　　 B. admired　　 C. attracted　　 D. allowed

6.(　 ) -_________ wonderful dictionary it is! Thank you for buying me such a useful present.

-I’m glad you like it.

　　 A. What a　　 B. What　　 C. How a　　 D. How

5.(　 ) That film was so _________ that most of the audience kept screaming in fear while watching it last night.

　　 A. exciting　　 B. frightening　　 C. boring　　 D. amazing

4.(　 ) You are in a bad mood all the afternoon. Maybe you need _________ like me to cheer you up.

　　 A. no one　　 B. none　　 C. someone　　 D. everyone