E. Fill in the correct preposition. • after • into . of.on.out
21. Keep your mobile phones switched ... at night.
22. Tom ran ... an old friend when he was at the shopping centre.
23.His sister and her friends hang ... at the harbour at weekends.
24.I've run out ... bread, so I'll buy some after work.
25.She saw a policeman running ... a robber.
Simnle or the Pres