----_______ are stamps used _______? ----Sending letters.
#39954
A
Why, for
B
What, for
C
What, /
D
How, for
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-- ________do you usually go to work?--I usually ________a bus to work.
#40104
A
How…by
B
How …on
C
How…take
D
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—How can we protect ourselves ________ the earthquake? —We should stay calm first.
#35891
A
with
B
about
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for
D
from