— _____do they surf on the internet ?—Twice a week. 
#43517
A
How soon
B
How much
C
How many
D
How often
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       _  he tried many times, he still couldn’t move the heavy box.
#43541
A
So that
B
First ofall
C
Even though
D
In the end
--       bread would you like?--Three pieces of__
#43903
A
How many; breads
B
How many; bread
C
How much; breads
D
How much; bread