1) He ....... with most of the people in last night's face-to-face meeting. He was so talkative (communication)
2) There were very surprised when they knew this........ (nation)
3) in addition to hand gestures, facial........also belongs to non-verbal communication (express )
4) Water is ...... after the flood (contamination )
5) The........ between Việt Nam and America is good (friend)
6) I'll call the police if you don't leave me alone
⇒ Unless