Fill in the gaps with the correct prepositions .
1.to hear from sb(sb's news)
2.to bump into sb
3.to wave ..........sb
4.connect ...........sb
5.to glare ...........sb
6.to smile ..........sb
7.to chat.............sb
8.to shout ........sb
9.to whisper ........sb
10.to write a letter ........sb
11.to wink .......sb
12.to shake hands ......sb
13.to make an appointment...........sb
14.to communicate .......sb
15.to have a meeting......sb