Liu Xuan is really ________,she is very good at math,  physics and chemistry.

—Who is playing the piano in the classroom? —_______ must be Susan. She plays the piano after school every day.  

When he heard a cry for help, he ran out as          as he could.

When he arrived at the airport, Lee Minho found that            fans were waiting for him there.

Thank you for ______ me about it.