They've kept up a friendship with the teacher whom they were at school _____ twenty years ago.
#28347
A
with
B
about
C
since
D
till
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Little children should go to school to learn something. ______，they should learn how to behave well in social life.
#25880
A
After all
B
In all
C
At all
D
Above all
Thanks to modern technology which has now broken the law of seasons, farming is no longer _______ weather and temperature.
#25468
A
at the mercy of
B
in the charge of
C
in the name of
D
in view of
Since no one really knows what effects the GM food might have _____ us humans, many countries think that they should be cautious _____ this new technology.
#26140
A
about; with
B
on; to
C
in; to
D
on; with