He will be back in ___ hour. 
#39548
A
/
B
the
C
a
D
an
推荐题目
-- ________do you usually go to work?--I usually ________a bus to work.
#40104
A
How…by
B
How …on
C
How…take
D
What…on
Mr Han has a    son and he is happy.
#40457
A
3 year old
B
3 - year - old
C
3 - years – old
D
3 years old