My family _____ for dinner now. We're busy.( )
is preparing
are preparing
prepares
He never smokes _______ drops litter in public.( )
and
or
but
So
He got____ birthday cakes on his ____ birthday.( )
second;fifteen
two;fifteen
second;fifteenth
two;fifteenth
We find ________ more useful for students to do new eye exercises.( )
it
this
one
that
_____ such a cold morning,I also got up______ 6 o'clock to go for a run as usual.( )
Before;in
At;to
On;at
In;at
He is going to buy _______ useful book.And _______ book is on science.( )
a;an
a;the
an;an
an;the