The spirit of ox(牛)_________ an important role for China's development this year.( )
A.is playingB.was playing
C.played
﹣Our classroom _______.Don't throw rubbish here and there,please.﹣Sorry.I won't do that again.( )
was cleaning
cleans
was cleaned
cleaned
He studies hard all the time,_______ he has made rapid progress in many ways.( )
so
because
but
yet
﹣Do you know the man _______ is cooking in the kitchen?
﹣Sure.He is my uncle.( )
whose
which
who
whom
I want to know if he _______ tomorrow,if he _______,please call me in time.( )
will come; comes
comes; will come
comes; comes
will come;will come
﹣May I speak to your headmaster?
﹣Sorry,he isn't here.He _______ to Guiyang on business.
have gone
has gone
have been
has been