Hurry up!Jack for you to play basketball.
OK.I'm coming..( )
A.waitedB.is waiting
C.was waiting
My parents often tell me ______ hard.( )
study
to study
studying
studied
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