i. 1-5 bcaca

ii. 1. themselves 2. himself 3. yourself 4. myself 5. herself

iii. 1-5 baccb 6-10 cbaca

iv. 1-5 ccbca

自制由數(shù)直南領(lǐng)世，科音史該。

v. one possible version:

the flu spreads easily among people. weshould do our best to prevent it. weshould go to bed early and get up early.we should also do some running. it’sgood for us to open the windows to let thefresh air in. we’d better not go tocrowded places. we must often clean ourhouses, wash hands, and change clothes.we should drink more boiled waterand eat healthy food.