【正文】 September 4 at 1:00 .3. Marjorie goes to the library in the afternoon on September 8,9,and 10.4. Marjorie will go to the dentist in 2 hours.Unit 6: Health (p. 72)Challenge 1: Need to的用法 (p. 72)B.1. Gilberto2. Kenji3. LienD.1. likes to2. want3. need to4. likes to5. likes6. work7. need to8. relaxE.1. wants to2. needs to3. eat4. exercises5. want6. drink7. needs to8. likes toF.Answers will vary.Challenge 2: 形容詞的比較級與最高級(p. 74)A.Answers will vary.B.Answers will vary.D.Answers may vary.Sample Answers:1. A cold is more serious than a runny nose.2. A sore throat is the most serious ailment.3. A toothache is more mon than the flu.4. A runny nose is less serious than a backache.5. A bad headache is the most mon ailment.6. A cold is less serious than a backache.7. The flu is less mon than a cold.8. The flu is the most serious ailment.E.Answers will vary.Sample Answers:1. The flu is more serious than a cold.2. A sore throat is the most serious ailment.3. A backache is the most mon ailment.4. A cold is less serious than a headache.5. A sore throat is less mon than a headache.6. A cold is the most mon ailment.F.Answers will vary.Challenge 3:一般過去時: 規(guī)則與不規(guī)則 (p. 76)A.1. c. to a doctor.2. d. three times a day.3. a. in the park every week.4. b. cigarettes.B. Anya talked to a doctor. She exercised three times a day. She walked in the park every week. She also smoked cigarettes.D.1. was2. was3. was4. had5. were6. had7. had8. were9. had10. wereE.1. played2. wanted3. visited4. asked5. needed6. smoked7. talkedF. Last week, Alex exercised every day. He also played tennis on Saturday. He wanted his wife to play tennis, too. On Saturday, she visited the doctor. She asked for medicine for more energy. She needed more exercise and not medicine. She also smoked a pack of cigarettes a day. She talked to her husband about it.Challenge 4: 情態(tài)動詞: Should (p. 78)A.DUDWUWUWDDDUC.1. You should go to the drugstore.2. You should sleep eight hours tonight.3. Ricardo should take some cough syrup.4. You should go to the hospital.5. You should go to bed.6. Luisa should take some aspirin.7. They should stop smoking.8. You should go to the optometrist.D.1. shouldn’t2. should3. shouldn’t4. shouldn’t5. should6. should7. should8. shouldn’t9. should10. shouldn’tE.Answers will vary.Sample Answers:1. You should sleep eight hours tonight.2. You should take cough medicine.3. You shouldn’t smoke cigarettes.4. You shouldn’t play tennis today.Challenge 5: 一般過去時:不規(guī)則動詞 (p. 80)B.1. b. call the fire department, the police, or a poison control center2. a. his or her name and addressD.1. drove2. woke3. went4. bought5. came6. did7. ate8. slept9. took10. got11. said12. drankE.1. My throat hurt.2. You drove me to the doctor at noon.3. The doctor said to take some medicine.4. I got the medicine from the doctor.5. You read the directions.6. I took two teaspoons of the syrup.7. I slept for ten hours.8. We ate a good breakfast.9. My friends came to see me.10. They bought me some flowers.F.Answers will vary.Extension Challenge 1: Should的問句 (p. 82)A.toothache, stomachache, headache, backache, sore throatB.Answers will vary.Sample answers:1. aspirin2. calcium carbonate3. aspirin4. aspirin5. cough syrupD.1. Should I drink coffee?2. Should Eva eat three meals a day?3. Should the medicine reduce the fever?4. Should Mario have a checkup?5. Should you chew the tablets?6. Should they make an appointment?7. Should I call an ambulance?8. Should your parents stop smoking?E.1. How should your mother lose weight?2. When should Rosa take her medicine?3. Why should you run every day?4. Where should the children play soccer?5. Who should we visit today?6. When should Tan and Diem go to the dentist?7. Why should Vladimir take aspirin?8. What should I eat tonight?9. Who should you call in the morning?10. Where should we call for an appointment?F.1. Should Alexi take aspirin for a headache?2. Should Mario take calcium carbonate for a stomachache?3. Should Dalva take aspirin for a toothache?4. Should Gilberto take aspirin for a backache?5. Should Marie take cough syrup for a sore throat?Extension Challenge 2: 一般過去時: 問句 (p. 84)B.Answers will vary.Sample answers:1. Victor should sleep for eight hours.2. Victor should exercise for thirty minutes a day.3. Victor should eat three meals a day. D.1. Did you have a headache? / I didn’t2. Did Rosa exercise on Monday? / she didn’t3. Did you go to the dentist? / I didn’t4. Did they read the warnings? / they didn’t5. Did you drink orange juice? / we didn’t6. Did the cat break its foot? / it didn’tE.1. What did the doctor say?2. How did you pay?3. Where did Marina buy the medicine?4. Who did she buy the pills for?5. When did your parents stop smoking?6. Why did they exercise every day?F.Answers will vary.Unit 7: Work, Work, Work (p. 86)Challenge 1: 將來時: Will (p. 86)B.1. S2. S3. NI4. NI5. S6. GD.1. will work2. will listen3. will e4. will follow5. will leave6. will not have7. will need8. won’t9. will have10. will leaveE.1. a. Lydia will e to work on time. b. Lydia won’t e to work on time. 2. a. The Nguyen brothers will follow instructions well.b. The Nguyen brothers won’t follow instructions well.3. a. I will help others at every opportunity. b. I won’t help others at every opportunity.4. a. We will work well in a team. b. We won’t work well in a team.F.Answers will vary.G.Answers will vary.Challenge 2: 情態(tài)動詞: Can （能力） (p. 88)B.1. use a copy machine