7. --- Can you tell me what’s your aim in life, Li Ping?--- I am aiming ____ a famous physicist.
_____ of you comes first will get the ticket.
He just does ______ he pleases and never thinks about anyone else.
_____ worries me is _____ we’re going to pay for all this.
I’m afraid we can’t have coffee; there’s _____ left.
The classroom is almost empty, where is _____?