— Ten dollars, please! — How terrible! I ______ bringing my wallet with me.
He had ________me not to play games on the Internet again, but hardly could he get rid of them.
Without proper lessons, you could _________a lot of bad habits when playing the piano.
The college has developed an on-line system ________students can choose their own professors.
As a doctor , it’s against my ______ to accept gifts from patients.
In communication, a smile is usually ______ strong sign of a friendly and ______ open attitude.