I have to tell you.
---- ______ you ever ______ aboard ?--- Yes, but only once.
---Why didn’t the little boy raise his hand in class today ?---- Maybe the questions are ______ difficult for him_______ answer .
–Could you tell me ______ yuanxiao in China?--Usually at the Lantern Festival.
Friends are those _____ always stand by your side when you need help.
I _______ be afraid to sleep alone in my room, but now I _______ sleeping there alone.