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400 Fold the clothes 900 1,100 1. Fewer than ___ teenagers in big cities sweep the floor. A. 450 B. 750 C. 800 D. 900 2. The number of teenagers ___ in big cities is bigger than that in small villages. A. making the bed B. taking out the trash C. folding the clothes the dishes 3. There are around 3,500 teenagers in total from the cities and villages who ___. A. take out the trash and do the dishes B. sweep the floor and make the bed C. make the bed and do the dishes D. do the dishes and fold the clothes Answers I. 1. developing。 developed 2. need 3. unfair 4. means 5. swept 6. to find 7. not to get 8. drink 9. taking 10. to save Ⅱ. 1. sat。 came over 2. as tired as 3. waste of their time 4. As a result。 falls。 drops 5. angry with 6. was snowing。 took off 7. so that。 catch 8. are dressed in。 celebrate 9. are chasing after 10. was/is writing。 while。 were/are playing Ⅲ. DDADB CDBCC Ⅳ. DCC