On hearing the sound, the birds flew away in every ________.
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.
Not only I but also Tom _____ fond of watching TV.
It is difficult for us to ______ our conversation with all this noise around us.