One evening when it was so warm, I staye
题型:选择题
问题:
One evening when it was so warm, I stayed awake _________ until half past eleven in order to have a good look at the moon by myself.
A.on average
B.on purpose
C.on sale
D.on schedule
One evening when it was so warm, I stayed awake _________ until half past eleven in order to have a good look at the moon by myself.
A.on average
B.on purpose
C.on sale
D.on schedule