Idon'tknow_________.
A、howcanIfinishmyhomeworkontimeOurteachersmadeus________alotofhomeworkafterschool.
Americaisan__________country.Youcanhear__________everywhere.
Youlooknotabitolderthanyoudid5yearsago.Howdoyou__________soyoung?
__________twenty-fifthofDecemberis__________ChristmasDay.
Woodisoften_________paper.