--- I hear Robert has gone to Harvard University for his master’s degree. --- Oh, how nice! Do you know when he ____?
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.
The Wangs are considering ______ to Huangshan for a trip at five tomorrow morning.
Internet, as well as telephones, ____ an important part in daily communication.