Homework- 被动语态Name: Class: B9(1)班 Score: 一、选择填空:( )1. The reading room _ yesterday afternoon. A. cleaned B. is cleaned C. was cleaning D. was cleaned( )2. The workers were made _ ten hours a day. A. work B. to work C. working D. worked( )3. Food _ in a cool place in summer. A. must keep B. mustnt keep C. must be kept D. mustnt be kept( )4. His father _ to work in Hong Kong 3 years