选择合适的介词填空
in；at； for； to； on； from；over
（1）Now she has e-friends from all

over

over

the world．
（2）The teachers were

in

in

the office just now．
（3）Thirty years ago， Mike's grandpa listened

to

to

the radio．
（4）Mr Liu reads newspapers

for

for

news every day．
（5）She can read and watch news

on

on

the Internet．
（6）Twenty years ago， Mrs Brown made friends

at

at

school．
（7）She bought things

from

from

shops yesterday．