10. To finish this task requires more       (精力) .

9. More and more students are learning      (医疗保健) .

8. There are at        (最少) 1,200 students in our school.

7. Many doctors believe that       (快乐) is important for our health.

6. Reading in bed will       (伤害) your eyes.

5. Don't be        (担心的) about him. He'll be back soon.

4. Early in the       (二十) century,two famous scientists developed their personal ideas about dreams.

3. Little Sam        (期待) to have a large box of chocolates on his birthday.

2. Good health       (需要) enough exercise and a balanced (均衡的) diet.

1. PE is short for        (体力的) education.