--      are the blue hats on sale?   -- They are on sale for 100 dollars.
#43979
A
What
B
How long
C
How many
D
How much
推荐题目
It ______me two hours______to the top of the mountain.
#41327
A
took; to climb
B
spent; climbing
C
cost; to climb
D
paid; climbing
 Our plan is to plant 50 trees. And we have planted half of them    .
#35419
A
the other day
B
yet
C
so far
D
in the past