根据句意选词填空。注意每个单词的正确形式。
already, play, check, one, be
小题1:It’s a good idea _____________ your vocabulary notebook every day.
小题2:Spacecraft have __________ been to Mar.
小题3:The __________ prize is the holiday of your dreams in England.
小题4:–Where have you _________ these days? --To Beijing.
小题5:The little boy practises ___________ the violin every day.
