Can a plane fly _____ the Atlantic Ocean?—Yes, but it needs to go _____ the clouds for hours. [ ]

I heard that Jackie Chan would come here tomorrow. – That’s great. I’m really _______ about it.

______ unless I call you.

Although she didn’t know Boston well, she made her way _______to the Home Circle Building.

Herry! National Day is coming…一? Just occupy yourself in your study．