Tom cannot run as_____as his friends, so he practices running very hard.( )
fast
faster
slow
slower
Jenny,when did you move here?
I here for three years.
lived
moved
have moved
have lived
On her birthday.she got an iPad as a gift from her father.
twelve
twelfth
the twelve
the twelfth
You should smoking.It's really bad for your health.
put up
give up
get up
set up
You can't pass the exam you study hard.
if
as
for
unless
As we know,the Huanghe River is one of rivers in our country.( )
long
longer
longest
the longest