He had ________me not to play games on the Internet again, but hardly could he get rid of them.
A. wished B. promised C. advised D. persuaded
Without proper lessons, you could _________a lot of bad habits when playing the piano.
A. set up B. catch up C. pick up D. keep up
The college has developed an on-line system ________students can choose their own professors.
A. where B. when C. that D. which
As a doctor , it’s against my ______ to accept gifts from patients.
A. emotions B. principles C. regulations D. opinions
In communication, a smile is usually ______ strong sign of a friendly and ______ open attitude.
A. the, / B. a, an C. a, / D. the, an
