On July 1st,we'll celebrate the ________ birthday of the CPC.( )
A.hundredthB.hundredC.hundreds
What's your brother doing now?He _____ in the room.( )
sings
sung
has sung
is singing
Who is ______,Tom or Dave?Dave.( )
tall
taller
tallest
the tallest
There are ______ cars in the street.It's so crowded.( )
hundred
hundreds
hundred of
hundreds of
Mr.Wang teaches _______ Chinese.( )
us
we
our
your
Hello!Is that Peter speaking?Yes,_______.( )
It's Peter
I'm Peter
this is Peter
Peter is me