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What do you usually do ________ Christmas?
A.on
B.at
C.in
D.for
I like to watch football games______ TV.
A.on B.at C.in D.from
I’ll be ready _____________a minute.
A.on B.at
C.for D.in
What’s this ________ Chinese?
A.in B.at C.of D.on
The snake lives ________ grassland.
B.in
C.at
D.to