30. Why are you so anxious? It isn’t your problem______ .
The little girl walks as if she _________ an old woman.
Since then, finding ways to grow more peanuts _________ his life goal.
The new invention made ____________ possible for a blind man to read.
— Did you regret ___________ to your mother in a rude manner this morning? — Yes, I’ll apologize to her the moment she comes back.
The new stadium being built in our city for the next Asian Games will be _____ the old one.