---- ______ you ever ______ aboard ?--- Yes, but only once.
– My hat is out of style. __________?– Maybe you should buy a new one.
– __________ have you been skating?– For five hours.
There __________ an English speech next week.
– Where is Miss Wang?– She went to Shanghai last week and will return __________ three days.
Lin saw __________ UFO last month. It’s strange.