5、An average American family uses up six trees'worth of paper every year.
举一反三
- _______ trees here are cut down in the forests every year.
- Which of the following countries uses more paper for each person a year?
- “When do you get up every morning?” “ ________.” A: At six B: On six C: In six
- American people celebrated the Independence Day on ( ) every year.
- The total premium of the writer’s family every year is _____.